Home / 22,211.72-30,641.70-13,130.97

Finding the Fourth Proportional to 22,211.72, 30,641.70 and 13,130.97

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Solution

The fourth proportional to 22,211.72, 30,641.70 and 13,130.97 is: 18,114.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,211.72 : 30,641.70 = 13,130.97 : x
  2. Step 2: Convert to fraction form
    22,211.72/30,641.70 = 13,130.97/x
  3. Step 3: Cross multiply
    22,211.72x = 30,641.70 × 13,130.97
  4. Step 4: Simplify right side
    22,211.72x = 402,355,177.78
  5. Step 5: Solve for x
    x = 402,355,177.78/22,211.72
  6. Step 6: Final answer
    x = 18,114.54

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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.