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Finding the Fourth Proportional to 15,863.77, 21,892.44 and 9,572.50

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Solution

The fourth proportional to 15,863.77, 21,892.44 and 9,572.50 is: 13,210.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,863.77 : 21,892.44 = 9,572.50 : x
  2. Step 2: Convert to fraction form
    15,863.77/21,892.44 = 9,572.50/x
  3. Step 3: Cross multiply
    15,863.77x = 21,892.44 × 9,572.50
  4. Step 4: Simplify right side
    15,863.77x = 209,565,381.90
  5. Step 5: Solve for x
    x = 209,565,381.90/15,863.77
  6. Step 6: Final answer
    x = 13,210.31

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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.