Home / 15,316.48-21,139.04-9,351.61

Finding the Fourth Proportional to 15,316.48, 21,139.04 and 9,351.61

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Solution

The fourth proportional to 15,316.48, 21,139.04 and 9,351.61 is: 12,906.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,316.48 : 21,139.04 = 9,351.61 : x
  2. Step 2: Convert to fraction form
    15,316.48/21,139.04 = 9,351.61/x
  3. Step 3: Cross multiply
    15,316.48x = 21,139.04 × 9,351.61
  4. Step 4: Simplify right side
    15,316.48x = 197,684,057.85
  5. Step 5: Solve for x
    x = 197,684,057.85/15,316.48
  6. Step 6: Final answer
    x = 12,906.62

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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.