Home / 57,721.60-86,585.10-18,281.80

Finding the Fourth Proportional to 57,721.60, 86,585.10 and 18,281.80

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Solution

The fourth proportional to 57,721.60, 86,585.10 and 18,281.80 is: 27,423.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,721.60 : 86,585.10 = 18,281.80 : x
  2. Step 2: Convert to fraction form
    57,721.60/86,585.10 = 18,281.80/x
  3. Step 3: Cross multiply
    57,721.60x = 86,585.10 × 18,281.80
  4. Step 4: Simplify right side
    57,721.60x = 1,582,931,481.18
  5. Step 5: Solve for x
    x = 1,582,931,481.18/57,721.60
  6. Step 6: Final answer
    x = 27,423.56

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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.