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Finding the Fourth Proportional to 14,644.80, 20,209.50 and 9,340.92

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Solution

The fourth proportional to 14,644.80, 20,209.50 and 9,340.92 is: 12,890.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,644.80 : 20,209.50 = 9,340.92 : x
  2. Step 2: Convert to fraction form
    14,644.80/20,209.50 = 9,340.92/x
  3. Step 3: Cross multiply
    14,644.80x = 20,209.50 × 9,340.92
  4. Step 4: Simplify right side
    14,644.80x = 188,775,322.74
  5. Step 5: Solve for x
    x = 188,775,322.74/14,644.80
  6. Step 6: Final answer
    x = 12,890.26

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Half scale
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Double scale
Find fourth proportional to 14,645.80, 20,210.88 and 9,341.92
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.