Home / 42,013.20-57,981.36-23,150.40

Finding the Fourth Proportional to 42,013.20, 57,981.36 and 23,150.40

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Solution

The fourth proportional to 42,013.20, 57,981.36 and 23,150.40 is: 31,949.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,013.20 : 57,981.36 = 23,150.40 : x
  2. Step 2: Convert to fraction form
    42,013.20/57,981.36 = 23,150.40/x
  3. Step 3: Cross multiply
    42,013.20x = 57,981.36 × 23,150.40
  4. Step 4: Simplify right side
    42,013.20x = 1,342,291,676.54
  5. Step 5: Solve for x
    x = 1,342,291,676.54/42,013.20
  6. Step 6: Final answer
    x = 31,949.28

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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.