Home / 15,819.02-21,829.55-9,104.86

Finding the Fourth Proportional to 15,819.02, 21,829.55 and 9,104.86

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Solution

The fourth proportional to 15,819.02, 21,829.55 and 9,104.86 is: 12,564.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,819.02 : 21,829.55 = 9,104.86 : x
  2. Step 2: Convert to fraction form
    15,819.02/21,829.55 = 9,104.86/x
  3. Step 3: Cross multiply
    15,819.02x = 21,829.55 × 9,104.86
  4. Step 4: Simplify right side
    15,819.02x = 198,754,996.61
  5. Step 5: Solve for x
    x = 198,754,996.61/15,819.02
  6. Step 6: Final answer
    x = 12,564.31

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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.