Home / 15,397.47-21,248.49-8,323.89

Finding the Fourth Proportional to 15,397.47, 21,248.49 and 8,323.89

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Solution

The fourth proportional to 15,397.47, 21,248.49 and 8,323.89 is: 11,486.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,397.47 : 21,248.49 = 8,323.89 : x
  2. Step 2: Convert to fraction form
    15,397.47/21,248.49 = 8,323.89/x
  3. Step 3: Cross multiply
    15,397.47x = 21,248.49 × 8,323.89
  4. Step 4: Simplify right side
    15,397.47x = 176,869,987.18
  5. Step 5: Solve for x
    x = 176,869,987.18/15,397.47
  6. Step 6: Final answer
    x = 11,486.95

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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.