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Finding the Fourth Proportional to 13,588.96, 18,752.95 and 8,210.65

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Solution

The fourth proportional to 13,588.96, 18,752.95 and 8,210.65 is: 11,330.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,588.96 : 18,752.95 = 8,210.65 : x
  2. Step 2: Convert to fraction form
    13,588.96/18,752.95 = 8,210.65/x
  3. Step 3: Cross multiply
    13,588.96x = 18,752.95 × 8,210.65
  4. Step 4: Simplify right side
    13,588.96x = 153,973,815.15
  5. Step 5: Solve for x
    x = 153,973,815.15/13,588.96
  6. Step 6: Final answer
    x = 11,330.80

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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.