Home / 15,725.85-21,699.20-9,010.19

Finding the Fourth Proportional to 15,725.85, 21,699.20 and 9,010.19

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Solution

The fourth proportional to 15,725.85, 21,699.20 and 9,010.19 is: 12,432.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,725.85 : 21,699.20 = 9,010.19 : x
  2. Step 2: Convert to fraction form
    15,725.85/21,699.20 = 9,010.19/x
  3. Step 3: Cross multiply
    15,725.85x = 21,699.20 × 9,010.19
  4. Step 4: Simplify right side
    15,725.85x = 195,513,761.30
  5. Step 5: Solve for x
    x = 195,513,761.30/15,725.85
  6. Step 6: Final answer
    x = 12,432.64

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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.