Home / 12,275.16-18,407.26-4,478.50

Finding the Fourth Proportional to 12,275.16, 18,407.26 and 4,478.50

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Solution

The fourth proportional to 12,275.16, 18,407.26 and 4,478.50 is: 6,715.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,275.16 : 18,407.26 = 4,478.50 : x
  2. Step 2: Convert to fraction form
    12,275.16/18,407.26 = 4,478.50/x
  3. Step 3: Cross multiply
    12,275.16x = 18,407.26 × 4,478.50
  4. Step 4: Simplify right side
    12,275.16x = 82,436,913.91
  5. Step 5: Solve for x
    x = 82,436,913.91/12,275.16
  6. Step 6: Final answer
    x = 6,715.75

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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.