Home / 15,490.98-21,377.88-8,417.34

Finding the Fourth Proportional to 15,490.98, 21,377.88 and 8,417.34

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Solution

The fourth proportional to 15,490.98, 21,377.88 and 8,417.34 is: 11,616.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,490.98 : 21,377.88 = 8,417.34 : x
  2. Step 2: Convert to fraction form
    15,490.98/21,377.88 = 8,417.34/x
  3. Step 3: Cross multiply
    15,490.98x = 21,377.88 × 8,417.34
  4. Step 4: Simplify right side
    15,490.98x = 179,944,884.44
  5. Step 5: Solve for x
    x = 179,944,884.44/15,490.98
  6. Step 6: Final answer
    x = 11,616.11

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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.