Home / 15,402.17-21,254.96-8,687.77

Finding the Fourth Proportional to 15,402.17, 21,254.96 and 8,687.77

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Solution

The fourth proportional to 15,402.17, 21,254.96 and 8,687.77 is: 11,989.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,402.17 : 21,254.96 = 8,687.77 : x
  2. Step 2: Convert to fraction form
    15,402.17/21,254.96 = 8,687.77/x
  3. Step 3: Cross multiply
    15,402.17x = 21,254.96 × 8,687.77
  4. Step 4: Simplify right side
    15,402.17x = 184,658,252.13
  5. Step 5: Solve for x
    x = 184,658,252.13/15,402.17
  6. Step 6: Final answer
    x = 11,989.11

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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.