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Finding the Fourth Proportional to 18,547.30, 27,772.72 and 15,578.92

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Solution

The fourth proportional to 18,547.30, 27,772.72 and 15,578.92 is: 23,327.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,547.30 : 27,772.72 = 15,578.92 : x
  2. Step 2: Convert to fraction form
    18,547.30/27,772.72 = 15,578.92/x
  3. Step 3: Cross multiply
    18,547.30x = 27,772.72 × 15,578.92
  4. Step 4: Simplify right side
    18,547.30x = 432,668,983.06
  5. Step 5: Solve for x
    x = 432,668,983.06/18,547.30
  6. Step 6: Final answer
    x = 23,327.87

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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.