Home / 42,021.12-57,991.74-23,158.20

Finding the Fourth Proportional to 42,021.12, 57,991.74 and 23,158.20

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Solution

The fourth proportional to 42,021.12, 57,991.74 and 23,158.20 is: 31,959.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,021.12 : 57,991.74 = 23,158.20 : x
  2. Step 2: Convert to fraction form
    42,021.12/57,991.74 = 23,158.20/x
  3. Step 3: Cross multiply
    42,021.12x = 57,991.74 × 23,158.20
  4. Step 4: Simplify right side
    42,021.12x = 1,342,984,313.27
  5. Step 5: Solve for x
    x = 1,342,984,313.27/42,021.12
  6. Step 6: Final answer
    x = 31,959.75

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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.