Home / 15,612.70-21,545.50-8,539.16

Finding the Fourth Proportional to 15,612.70, 21,545.50 and 8,539.16

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Solution

The fourth proportional to 15,612.70, 21,545.50 and 8,539.16 is: 11,784.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,612.70 : 21,545.50 = 8,539.16 : x
  2. Step 2: Convert to fraction form
    15,612.70/21,545.50 = 8,539.16/x
  3. Step 3: Cross multiply
    15,612.70x = 21,545.50 × 8,539.16
  4. Step 4: Simplify right side
    15,612.70x = 183,980,471.78
  5. Step 5: Solve for x
    x = 183,980,471.78/15,612.70
  6. Step 6: Final answer
    x = 11,784.03

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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.