Home / 42,001.80-63,011.58-13,920.26

Finding the Fourth Proportional to 42,001.80, 63,011.58 and 13,920.26

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Solution

The fourth proportional to 42,001.80, 63,011.58 and 13,920.26 is: 20,883.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,001.80 : 63,011.58 = 13,920.26 : x
  2. Step 2: Convert to fraction form
    42,001.80/63,011.58 = 13,920.26/x
  3. Step 3: Cross multiply
    42,001.80x = 63,011.58 × 13,920.26
  4. Step 4: Simplify right side
    42,001.80x = 877,137,576.61
  5. Step 5: Solve for x
    x = 877,137,576.61/42,001.80
  6. Step 6: Final answer
    x = 20,883.33

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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.