Home / 20,498.65-28,287.85-11,547.04

Finding the Fourth Proportional to 20,498.65, 28,287.85 and 11,547.04

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Solution

The fourth proportional to 20,498.65, 28,287.85 and 11,547.04 is: 15,934.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,498.65 : 28,287.85 = 11,547.04 : x
  2. Step 2: Convert to fraction form
    20,498.65/28,287.85 = 11,547.04/x
  3. Step 3: Cross multiply
    20,498.65x = 28,287.85 × 11,547.04
  4. Step 4: Simplify right side
    20,498.65x = 326,640,935.46
  5. Step 5: Solve for x
    x = 326,640,935.46/20,498.65
  6. Step 6: Final answer
    x = 15,934.75

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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.