Home / 38,729.60-58,051.20-20,002.40

Finding the Fourth Proportional to 38,729.60, 58,051.20 and 20,002.40

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Solution

The fourth proportional to 38,729.60, 58,051.20 and 20,002.40 is: 29,981.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,729.60 : 58,051.20 = 20,002.40 : x
  2. Step 2: Convert to fraction form
    38,729.60/58,051.20 = 20,002.40/x
  3. Step 3: Cross multiply
    38,729.60x = 58,051.20 × 20,002.40
  4. Step 4: Simplify right side
    38,729.60x = 1,161,163,322.88
  5. Step 5: Solve for x
    x = 1,161,163,322.88/38,729.60
  6. Step 6: Final answer
    x = 29,981.29

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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.