Home / 15,397.70-21,230.61-10,861.13

Finding the Fourth Proportional to 15,397.70, 21,230.61 and 10,861.13

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Solution

The fourth proportional to 15,397.70, 21,230.61 and 10,861.13 is: 14,975.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,397.70 : 21,230.61 = 10,861.13 : x
  2. Step 2: Convert to fraction form
    15,397.70/21,230.61 = 10,861.13/x
  3. Step 3: Cross multiply
    15,397.70x = 21,230.61 × 10,861.13
  4. Step 4: Simplify right side
    15,397.70x = 230,588,309.04
  5. Step 5: Solve for x
    x = 230,588,309.04/15,397.70
  6. Step 6: Final answer
    x = 14,975.51

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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.