Home / 15,617.13-21,551.46-8,902.74

Finding the Fourth Proportional to 15,617.13, 21,551.46 and 8,902.74

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Solution

The fourth proportional to 15,617.13, 21,551.46 and 8,902.74 is: 12,285.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,617.13 : 21,551.46 = 8,902.74 : x
  2. Step 2: Convert to fraction form
    15,617.13/21,551.46 = 8,902.74/x
  3. Step 3: Cross multiply
    15,617.13x = 21,551.46 × 8,902.74
  4. Step 4: Simplify right side
    15,617.13x = 191,867,045.00
  5. Step 5: Solve for x
    x = 191,867,045.00/15,617.13
  6. Step 6: Final answer
    x = 12,285.68

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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.