Home / 12,377.90-17,087.49-8,345.70

Finding the Fourth Proportional to 12,377.90, 17,087.49 and 8,345.70

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Solution

The fourth proportional to 12,377.90, 17,087.49 and 8,345.70 is: 11,521.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,377.90 : 17,087.49 = 8,345.70 : x
  2. Step 2: Convert to fraction form
    12,377.90/17,087.49 = 8,345.70/x
  3. Step 3: Cross multiply
    12,377.90x = 17,087.49 × 8,345.70
  4. Step 4: Simplify right side
    12,377.90x = 142,607,065.29
  5. Step 5: Solve for x
    x = 142,607,065.29/12,377.90
  6. Step 6: Final answer
    x = 11,521.10

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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.