Home / 38,680.20-53,375.04-21,913.20

Finding the Fourth Proportional to 38,680.20, 53,375.04 and 21,913.20

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Solution

The fourth proportional to 38,680.20, 53,375.04 and 21,913.20 is: 30,238.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,680.20 : 53,375.04 = 21,913.20 : x
  2. Step 2: Convert to fraction form
    38,680.20/53,375.04 = 21,913.20/x
  3. Step 3: Cross multiply
    38,680.20x = 53,375.04 × 21,913.20
  4. Step 4: Simplify right side
    38,680.20x = 1,169,617,926.53
  5. Step 5: Solve for x
    x = 1,169,617,926.53/38,680.20
  6. Step 6: Final answer
    x = 30,238.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.