Home / 45,250.12-67,864.20-18,974.50

Finding the Fourth Proportional to 45,250.12, 67,864.20 and 18,974.50

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Solution

The fourth proportional to 45,250.12, 67,864.20 and 18,974.50 is: 28,457.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,250.12 : 67,864.20 = 18,974.50 : x
  2. Step 2: Convert to fraction form
    45,250.12/67,864.20 = 18,974.50/x
  3. Step 3: Cross multiply
    45,250.12x = 67,864.20 × 18,974.50
  4. Step 4: Simplify right side
    45,250.12x = 1,287,689,262.90
  5. Step 5: Solve for x
    x = 1,287,689,262.90/45,250.12
  6. Step 6: Final answer
    x = 28,457.15

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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.