Home / 15,659.47-21,610.16-8,489.44

Finding the Fourth Proportional to 15,659.47, 21,610.16 and 8,489.44

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Solution

The fourth proportional to 15,659.47, 21,610.16 and 8,489.44 is: 11,715.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,659.47 : 21,610.16 = 8,489.44 : x
  2. Step 2: Convert to fraction form
    15,659.47/21,610.16 = 8,489.44/x
  3. Step 3: Cross multiply
    15,659.47x = 21,610.16 × 8,489.44
  4. Step 4: Simplify right side
    15,659.47x = 183,458,156.71
  5. Step 5: Solve for x
    x = 183,458,156.71/15,659.47
  6. Step 6: Final answer
    x = 11,715.48

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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.