Home / 15,422.90-21,283.49-8,708.47

Finding the Fourth Proportional to 15,422.90, 21,283.49 and 8,708.47

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Solution

The fourth proportional to 15,422.90, 21,283.49 and 8,708.47 is: 12,017.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,422.90 : 21,283.49 = 8,708.47 : x
  2. Step 2: Convert to fraction form
    15,422.90/21,283.49 = 8,708.47/x
  3. Step 3: Cross multiply
    15,422.90x = 21,283.49 × 8,708.47
  4. Step 4: Simplify right side
    15,422.90x = 185,346,602.72
  5. Step 5: Solve for x
    x = 185,346,602.72/15,422.90
  6. Step 6: Final answer
    x = 12,017.63

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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.