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Finding the Fourth Proportional to 29,205.78, 40,303.98 and 15,957.78

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Solution

The fourth proportional to 29,205.78, 40,303.98 and 15,957.78 is: 22,021.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,205.78 : 40,303.98 = 15,957.78 : x
  2. Step 2: Convert to fraction form
    29,205.78/40,303.98 = 15,957.78/x
  3. Step 3: Cross multiply
    29,205.78x = 40,303.98 × 15,957.78
  4. Step 4: Simplify right side
    29,205.78x = 643,162,045.96
  5. Step 5: Solve for x
    x = 643,162,045.96/29,205.78
  6. Step 6: Final answer
    x = 22,021.74

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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.