Home / 15,530.97-21,432.82-8,457.39

Finding the Fourth Proportional to 15,530.97, 21,432.82 and 8,457.39

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Solution

The fourth proportional to 15,530.97, 21,432.82 and 8,457.39 is: 11,671.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,530.97 : 21,432.82 = 8,457.39 : x
  2. Step 2: Convert to fraction form
    15,530.97/21,432.82 = 8,457.39/x
  3. Step 3: Cross multiply
    15,530.97x = 21,432.82 × 8,457.39
  4. Step 4: Simplify right side
    15,530.97x = 181,265,717.54
  5. Step 5: Solve for x
    x = 181,265,717.54/15,530.97
  6. Step 6: Final answer
    x = 11,671.24

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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.