Home / 15,864.17-21,892.48-8,790.57

Finding the Fourth Proportional to 15,864.17, 21,892.48 and 8,790.57

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Solution

The fourth proportional to 15,864.17, 21,892.48 and 8,790.57 is: 12,130.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,864.17 : 21,892.48 = 8,790.57 : x
  2. Step 2: Convert to fraction form
    15,864.17/21,892.48 = 8,790.57/x
  3. Step 3: Cross multiply
    15,864.17x = 21,892.48 × 8,790.57
  4. Step 4: Simplify right side
    15,864.17x = 192,447,355.94
  5. Step 5: Solve for x
    x = 192,447,355.94/15,864.17
  6. Step 6: Final answer
    x = 12,130.95

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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.