Home / 38,641.20-57,929.40-20,173.20

Finding the Fourth Proportional to 38,641.20, 57,929.40 and 20,173.20

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Solution

The fourth proportional to 38,641.20, 57,929.40 and 20,173.20 is: 30,242.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,641.20 : 57,929.40 = 20,173.20 : x
  2. Step 2: Convert to fraction form
    38,641.20/57,929.40 = 20,173.20/x
  3. Step 3: Cross multiply
    38,641.20x = 57,929.40 × 20,173.20
  4. Step 4: Simplify right side
    38,641.20x = 1,168,621,372.08
  5. Step 5: Solve for x
    x = 1,168,621,372.08/38,641.20
  6. Step 6: Final answer
    x = 30,242.89

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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.