Home / 15,561.10-21,474.31-8,487.52

Finding the Fourth Proportional to 15,561.10, 21,474.31 and 8,487.52

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Solution

The fourth proportional to 15,561.10, 21,474.31 and 8,487.52 is: 11,712.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,561.10 : 21,474.31 = 8,487.52 : x
  2. Step 2: Convert to fraction form
    15,561.10/21,474.31 = 8,487.52/x
  3. Step 3: Cross multiply
    15,561.10x = 21,474.31 × 8,487.52
  4. Step 4: Simplify right side
    15,561.10x = 182,263,635.61
  5. Step 5: Solve for x
    x = 182,263,635.61/15,561.10
  6. Step 6: Final answer
    x = 11,712.77

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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.