Home / 15,949.98-21,988.16-11,219.58

Finding the Fourth Proportional to 15,949.98, 21,988.16 and 11,219.58

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Solution

The fourth proportional to 15,949.98, 21,988.16 and 11,219.58 is: 15,466.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,949.98 : 21,988.16 = 11,219.58 : x
  2. Step 2: Convert to fraction form
    15,949.98/21,988.16 = 11,219.58/x
  3. Step 3: Cross multiply
    15,949.98x = 21,988.16 × 11,219.58
  4. Step 4: Simplify right side
    15,949.98x = 246,697,920.17
  5. Step 5: Solve for x
    x = 246,697,920.17/15,949.98
  6. Step 6: Final answer
    x = 15,466.97

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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.