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Finding the Fourth Proportional to 29,307.69, 40,444.43 and 15,878.88

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Solution

The fourth proportional to 29,307.69, 40,444.43 and 15,878.88 is: 21,912.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,307.69 : 40,444.43 = 15,878.88 : x
  2. Step 2: Convert to fraction form
    29,307.69/40,444.43 = 15,878.88/x
  3. Step 3: Cross multiply
    29,307.69x = 40,444.43 × 15,878.88
  4. Step 4: Simplify right side
    29,307.69x = 642,212,171.24
  5. Step 5: Solve for x
    x = 642,212,171.24/29,307.69
  6. Step 6: Final answer
    x = 21,912.75

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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.