Home / 15,829.18-21,845.36-9,116.58

Finding the Fourth Proportional to 15,829.18, 21,845.36 and 9,116.58

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Solution

The fourth proportional to 15,829.18, 21,845.36 and 9,116.58 is: 12,581.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,829.18 : 21,845.36 = 9,116.58 : x
  2. Step 2: Convert to fraction form
    15,829.18/21,845.36 = 9,116.58/x
  3. Step 3: Cross multiply
    15,829.18x = 21,845.36 × 9,116.58
  4. Step 4: Simplify right side
    15,829.18x = 199,154,972.07
  5. Step 5: Solve for x
    x = 199,154,972.07/15,829.18
  6. Step 6: Final answer
    x = 12,581.51

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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.