Home / 42,023.62-63,055.08-20,965.28

Finding the Fourth Proportional to 42,023.62, 63,055.08 and 20,965.28

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Solution

The fourth proportional to 42,023.62, 63,055.08 and 20,965.28 is: 31,457.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,023.62 : 63,055.08 = 20,965.28 : x
  2. Step 2: Convert to fraction form
    42,023.62/63,055.08 = 20,965.28/x
  3. Step 3: Cross multiply
    42,023.62x = 63,055.08 × 20,965.28
  4. Step 4: Simplify right side
    42,023.62x = 1,321,967,407.62
  5. Step 5: Solve for x
    x = 1,321,967,407.62/42,023.62
  6. Step 6: Final answer
    x = 31,457.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.