Home / 27,280.80-40,921.20-18,423.45

Finding the Fourth Proportional to 27,280.80, 40,921.20 and 18,423.45

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Solution

The fourth proportional to 27,280.80, 40,921.20 and 18,423.45 is: 27,635.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,280.80 : 40,921.20 = 18,423.45 : x
  2. Step 2: Convert to fraction form
    27,280.80/40,921.20 = 18,423.45/x
  3. Step 3: Cross multiply
    27,280.80x = 40,921.20 × 18,423.45
  4. Step 4: Simplify right side
    27,280.80x = 753,909,682.14
  5. Step 5: Solve for x
    x = 753,909,682.14/27,280.80
  6. Step 6: Final answer
    x = 27,635.18

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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.