Home / 13,987.79-20,972.46-5,658.05

Finding the Fourth Proportional to 13,987.79, 20,972.46 and 5,658.05

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Solution

The fourth proportional to 13,987.79, 20,972.46 and 5,658.05 is: 8,483.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.79 : 20,972.46 = 5,658.05 : x
  2. Step 2: Convert to fraction form
    13,987.79/20,972.46 = 5,658.05/x
  3. Step 3: Cross multiply
    13,987.79x = 20,972.46 × 5,658.05
  4. Step 4: Simplify right side
    13,987.79x = 118,663,279.73
  5. Step 5: Solve for x
    x = 118,663,279.73/13,987.79
  6. Step 6: Final answer
    x = 8,483.35

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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.