Home / 15,531.68-21,440.94-9,156.26

Finding the Fourth Proportional to 15,531.68, 21,440.94 and 9,156.26

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Solution

The fourth proportional to 15,531.68, 21,440.94 and 9,156.26 is: 12,639.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,531.68 : 21,440.94 = 9,156.26 : x
  2. Step 2: Convert to fraction form
    15,531.68/21,440.94 = 9,156.26/x
  3. Step 3: Cross multiply
    15,531.68x = 21,440.94 × 9,156.26
  4. Step 4: Simplify right side
    15,531.68x = 196,318,821.28
  5. Step 5: Solve for x
    x = 196,318,821.28/15,531.68
  6. Step 6: Final answer
    x = 12,639.90

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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.