Home / 12,275.28-18,411.08-3,954.20

Finding the Fourth Proportional to 12,275.28, 18,411.08 and 3,954.20

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Solution

The fourth proportional to 12,275.28, 18,411.08 and 3,954.20 is: 5,930.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,275.28 : 18,411.08 = 3,954.20 : x
  2. Step 2: Convert to fraction form
    12,275.28/18,411.08 = 3,954.20/x
  3. Step 3: Cross multiply
    12,275.28x = 18,411.08 × 3,954.20
  4. Step 4: Simplify right side
    12,275.28x = 72,800,980.71
  5. Step 5: Solve for x
    x = 72,800,980.71/12,275.28
  6. Step 6: Final answer
    x = 5,930.70

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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.