Home / 15,613.05-21,545.75-8,539.32

Finding the Fourth Proportional to 15,613.05, 21,545.75 and 8,539.32

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Solution

The fourth proportional to 15,613.05, 21,545.75 and 8,539.32 is: 11,784.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,613.05 : 21,545.75 = 8,539.32 : x
  2. Step 2: Convert to fraction form
    15,613.05/21,545.75 = 8,539.32/x
  3. Step 3: Cross multiply
    15,613.05x = 21,545.75 × 8,539.32
  4. Step 4: Simplify right side
    15,613.05x = 183,986,108.00
  5. Step 5: Solve for x
    x = 183,986,108.00/15,613.05
  6. Step 6: Final answer
    x = 11,784.12

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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.