Home / 20,177.10-30,281.31-13,980.53

Finding the Fourth Proportional to 20,177.10, 30,281.31 and 13,980.53

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Solution

The fourth proportional to 20,177.10, 30,281.31 and 13,980.53 is: 20,981.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,177.10 : 30,281.31 = 13,980.53 : x
  2. Step 2: Convert to fraction form
    20,177.10/30,281.31 = 13,980.53/x
  3. Step 3: Cross multiply
    20,177.10x = 30,281.31 × 13,980.53
  4. Step 4: Simplify right side
    20,177.10x = 423,348,838.60
  5. Step 5: Solve for x
    x = 423,348,838.60/20,177.10
  6. Step 6: Final answer
    x = 20,981.65

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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.