Home / 42,290.51-63,463.10-20,128.91

Finding the Fourth Proportional to 42,290.51, 63,463.10 and 20,128.91

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Solution

The fourth proportional to 42,290.51, 63,463.10 and 20,128.91 is: 30,206.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,290.51 : 63,463.10 = 20,128.91 : x
  2. Step 2: Convert to fraction form
    42,290.51/63,463.10 = 20,128.91/x
  3. Step 3: Cross multiply
    42,290.51x = 63,463.10 × 20,128.91
  4. Step 4: Simplify right side
    42,290.51x = 1,277,442,610.26
  5. Step 5: Solve for x
    x = 1,277,442,610.26/42,290.51
  6. Step 6: Final answer
    x = 30,206.37

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1.5x scale

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.