Home / 15,612.42-21,545.14-8,538.84

Finding the Fourth Proportional to 15,612.42, 21,545.14 and 8,538.84

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Solution

The fourth proportional to 15,612.42, 21,545.14 and 8,538.84 is: 11,783.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,612.42 : 21,545.14 = 8,538.84 : x
  2. Step 2: Convert to fraction form
    15,612.42/21,545.14 = 8,538.84/x
  3. Step 3: Cross multiply
    15,612.42x = 21,545.14 × 8,538.84
  4. Step 4: Simplify right side
    15,612.42x = 183,970,503.24
  5. Step 5: Solve for x
    x = 183,970,503.24/15,612.42
  6. Step 6: Final answer
    x = 11,783.60

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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.