Home / 13,972.15-20,958.14-5,649.90

Finding the Fourth Proportional to 13,972.15, 20,958.14 and 5,649.90

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Solution

The fourth proportional to 13,972.15, 20,958.14 and 5,649.90 is: 8,474.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972.15 : 20,958.14 = 5,649.90 : x
  2. Step 2: Convert to fraction form
    13,972.15/20,958.14 = 5,649.90/x
  3. Step 3: Cross multiply
    13,972.15x = 20,958.14 × 5,649.90
  4. Step 4: Simplify right side
    13,972.15x = 118,411,448.61
  5. Step 5: Solve for x
    x = 118,411,448.61/13,972.15
  6. Step 6: Final answer
    x = 8,474.82

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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.