Home / 15,612.42-21,545.60-8,539.32

Finding the Fourth Proportional to 15,612.42, 21,545.60 and 8,539.32

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Solution

The fourth proportional to 15,612.42, 21,545.60 and 8,539.32 is: 11,784.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,612.42 : 21,545.60 = 8,539.32 : x
  2. Step 2: Convert to fraction form
    15,612.42/21,545.60 = 8,539.32/x
  3. Step 3: Cross multiply
    15,612.42x = 21,545.60 × 8,539.32
  4. Step 4: Simplify right side
    15,612.42x = 183,984,730.30
  5. Step 5: Solve for x
    x = 183,984,730.30/15,612.42
  6. Step 6: Final answer
    x = 11,784.51

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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.