Home / 20,126.60-30,191.76-8,277.62

Finding the Fourth Proportional to 20,126.60, 30,191.76 and 8,277.62

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Solution

The fourth proportional to 20,126.60, 30,191.76 and 8,277.62 is: 12,417.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.60 : 30,191.76 = 8,277.62 : x
  2. Step 2: Convert to fraction form
    20,126.60/30,191.76 = 8,277.62/x
  3. Step 3: Cross multiply
    20,126.60x = 30,191.76 × 8,277.62
  4. Step 4: Simplify right side
    20,126.60x = 249,915,916.41
  5. Step 5: Solve for x
    x = 249,915,916.41/20,126.60
  6. Step 6: Final answer
    x = 12,417.19

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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.