Home / 63,038.80-94,569.38-20,921.40

Finding the Fourth Proportional to 63,038.80, 94,569.38 and 20,921.40

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Solution

The fourth proportional to 63,038.80, 94,569.38 and 20,921.40 is: 31,385.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,038.80 : 94,569.38 = 20,921.40 : x
  2. Step 2: Convert to fraction form
    63,038.80/94,569.38 = 20,921.40/x
  3. Step 3: Cross multiply
    63,038.80x = 94,569.38 × 20,921.40
  4. Step 4: Simplify right side
    63,038.80x = 1,978,523,826.73
  5. Step 5: Solve for x
    x = 1,978,523,826.73/63,038.80
  6. Step 6: Final answer
    x = 31,385.81

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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.