Home / 15,515.50-21,411.48-8,441.97

Finding the Fourth Proportional to 15,515.50, 21,411.48 and 8,441.97

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Solution

The fourth proportional to 15,515.50, 21,411.48 and 8,441.97 is: 11,649.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,515.50 : 21,411.48 = 8,441.97 : x
  2. Step 2: Convert to fraction form
    15,515.50/21,411.48 = 8,441.97/x
  3. Step 3: Cross multiply
    15,515.50x = 21,411.48 × 8,441.97
  4. Step 4: Simplify right side
    15,515.50x = 180,755,071.82
  5. Step 5: Solve for x
    x = 180,755,071.82/15,515.50
  6. Step 6: Final answer
    x = 11,649.97

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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.