Home / 18,211.16-25,117.92-12,547.76

Finding the Fourth Proportional to 18,211.16, 25,117.92 and 12,547.76

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Solution

The fourth proportional to 18,211.16, 25,117.92 and 12,547.76 is: 17,306.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,211.16 : 25,117.92 = 12,547.76 : x
  2. Step 2: Convert to fraction form
    18,211.16/25,117.92 = 12,547.76/x
  3. Step 3: Cross multiply
    18,211.16x = 25,117.92 × 12,547.76
  4. Step 4: Simplify right side
    18,211.16x = 315,173,631.86
  5. Step 5: Solve for x
    x = 315,173,631.86/18,211.16
  6. Step 6: Final answer
    x = 17,306.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.