Home / 15,612.56-21,545.50-8,538.83

Finding the Fourth Proportional to 15,612.56, 21,545.50 and 8,538.83

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Solution

The fourth proportional to 15,612.56, 21,545.50 and 8,538.83 is: 11,783.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,612.56 : 21,545.50 = 8,538.83 : x
  2. Step 2: Convert to fraction form
    15,612.56/21,545.50 = 8,538.83/x
  3. Step 3: Cross multiply
    15,612.56x = 21,545.50 × 8,538.83
  4. Step 4: Simplify right side
    15,612.56x = 183,973,361.77
  5. Step 5: Solve for x
    x = 183,973,361.77/15,612.56
  6. Step 6: Final answer
    x = 11,783.68

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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.