Home / 20,281.03-30,421.02-9,179.63

Finding the Fourth Proportional to 20,281.03, 30,421.02 and 9,179.63

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Solution

The fourth proportional to 20,281.03, 30,421.02 and 9,179.63 is: 13,769.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.03 : 30,421.02 = 9,179.63 : x
  2. Step 2: Convert to fraction form
    20,281.03/30,421.02 = 9,179.63/x
  3. Step 3: Cross multiply
    20,281.03x = 30,421.02 × 9,179.63
  4. Step 4: Simplify right side
    20,281.03x = 279,253,652.58
  5. Step 5: Solve for x
    x = 279,253,652.58/20,281.03
  6. Step 6: Final answer
    x = 13,769.20

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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.