Home / 38,488.40-57,718.20-13,518.80

Finding the Fourth Proportional to 38,488.40, 57,718.20 and 13,518.80

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Solution

The fourth proportional to 38,488.40, 57,718.20 and 13,518.80 is: 20,273.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,488.40 : 57,718.20 = 13,518.80 : x
  2. Step 2: Convert to fraction form
    38,488.40/57,718.20 = 13,518.80/x
  3. Step 3: Cross multiply
    38,488.40x = 57,718.20 × 13,518.80
  4. Step 4: Simplify right side
    38,488.40x = 780,280,802.16
  5. Step 5: Solve for x
    x = 780,280,802.16/38,488.40
  6. Step 6: Final answer
    x = 20,273.14

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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.