Home / 20,937.88-31,417.62-9,259.30

Finding the Fourth Proportional to 20,937.88, 31,417.62 and 9,259.30

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Solution

The fourth proportional to 20,937.88, 31,417.62 and 9,259.30 is: 13,893.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.88 : 31,417.62 = 9,259.30 : x
  2. Step 2: Convert to fraction form
    20,937.88/31,417.62 = 9,259.30/x
  3. Step 3: Cross multiply
    20,937.88x = 31,417.62 × 9,259.30
  4. Step 4: Simplify right side
    20,937.88x = 290,905,168.87
  5. Step 5: Solve for x
    x = 290,905,168.87/20,937.88
  6. Step 6: Final answer
    x = 13,893.73

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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.