Home / 29,307.11-40,443.76-15,878.71

Finding the Fourth Proportional to 29,307.11, 40,443.76 and 15,878.71

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Solution

The fourth proportional to 29,307.11, 40,443.76 and 15,878.71 is: 21,912.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,307.11 : 40,443.76 = 15,878.71 : x
  2. Step 2: Convert to fraction form
    29,307.11/40,443.76 = 15,878.71/x
  3. Step 3: Cross multiply
    29,307.11x = 40,443.76 × 15,878.71
  4. Step 4: Simplify right side
    29,307.11x = 642,194,736.35
  5. Step 5: Solve for x
    x = 642,194,736.35/29,307.11
  6. Step 6: Final answer
    x = 21,912.59

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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.