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Finding the Fourth Proportional to 32,689.88, 48,991.78 and 12,957.68

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Solution

The fourth proportional to 32,689.88, 48,991.78 and 12,957.68 is: 19,419.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,689.88 : 48,991.78 = 12,957.68 : x
  2. Step 2: Convert to fraction form
    32,689.88/48,991.78 = 12,957.68/x
  3. Step 3: Cross multiply
    32,689.88x = 48,991.78 × 12,957.68
  4. Step 4: Simplify right side
    32,689.88x = 634,819,807.87
  5. Step 5: Solve for x
    x = 634,819,807.87/32,689.88
  6. Step 6: Final answer
    x = 19,419.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.