Home / 42,018.28-57,987.38-23,155.40

Finding the Fourth Proportional to 42,018.28, 57,987.38 and 23,155.40

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Solution

The fourth proportional to 42,018.28, 57,987.38 and 23,155.40 is: 31,955.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,018.28 : 57,987.38 = 23,155.40 : x
  2. Step 2: Convert to fraction form
    42,018.28/57,987.38 = 23,155.40/x
  3. Step 3: Cross multiply
    42,018.28x = 57,987.38 × 23,155.40
  4. Step 4: Simplify right side
    42,018.28x = 1,342,720,978.85
  5. Step 5: Solve for x
    x = 1,342,720,978.85/42,018.28
  6. Step 6: Final answer
    x = 31,955.64

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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.