Home / 15,284.43-21,101.72-9,988.11

Finding the Fourth Proportional to 15,284.43, 21,101.72 and 9,988.11

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Solution

The fourth proportional to 15,284.43, 21,101.72 and 9,988.11 is: 13,789.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,284.43 : 21,101.72 = 9,988.11 : x
  2. Step 2: Convert to fraction form
    15,284.43/21,101.72 = 9,988.11/x
  3. Step 3: Cross multiply
    15,284.43x = 21,101.72 × 9,988.11
  4. Step 4: Simplify right side
    15,284.43x = 210,766,250.61
  5. Step 5: Solve for x
    x = 210,766,250.61/15,284.43
  6. Step 6: Final answer
    x = 13,789.60

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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.