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Finding the Fourth Proportional to 14,303.80, 19,743.78 and 8,338.60

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Solution

The fourth proportional to 14,303.80, 19,743.78 and 8,338.60 is: 11,509.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,303.80 : 19,743.78 = 8,338.60 : x
  2. Step 2: Convert to fraction form
    14,303.80/19,743.78 = 8,338.60/x
  3. Step 3: Cross multiply
    14,303.80x = 19,743.78 × 8,338.60
  4. Step 4: Simplify right side
    14,303.80x = 164,635,483.91
  5. Step 5: Solve for x
    x = 164,635,483.91/14,303.80
  6. Step 6: Final answer
    x = 11,509.91

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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.