Home / 20,559.60-30,839.40-7,416

Finding the Fourth Proportional to 20,559.60, 30,839.40 and 7,416

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Solution

The fourth proportional to 20,559.60, 30,839.40 and 7,416 is: 11,124.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,559.60 : 30,839.40 = 7,416 : x
  2. Step 2: Convert to fraction form
    20,559.60/30,839.40 = 7,416/x
  3. Step 3: Cross multiply
    20,559.60x = 30,839.40 × 7,416
  4. Step 4: Simplify right side
    20,559.60x = 228,704,990.40
  5. Step 5: Solve for x
    x = 228,704,990.40/20,559.60
  6. Step 6: Final answer
    x = 11,124.00

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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.