Home / 15,501.38-21,397.37-9,213.75

Finding the Fourth Proportional to 15,501.38, 21,397.37 and 9,213.75

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Solution

The fourth proportional to 15,501.38, 21,397.37 and 9,213.75 is: 12,718.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,501.38 : 21,397.37 = 9,213.75 : x
  2. Step 2: Convert to fraction form
    15,501.38/21,397.37 = 9,213.75/x
  3. Step 3: Cross multiply
    15,501.38x = 21,397.37 × 9,213.75
  4. Step 4: Simplify right side
    15,501.38x = 197,149,971.77
  5. Step 5: Solve for x
    x = 197,149,971.77/15,501.38
  6. Step 6: Final answer
    x = 12,718.22

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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.