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Finding the Fourth Proportional to 32,836.80, 49,155.84 and 21,158.40

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Solution

The fourth proportional to 32,836.80, 49,155.84 and 21,158.40 is: 31,673.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,836.80 : 49,155.84 = 21,158.40 : x
  2. Step 2: Convert to fraction form
    32,836.80/49,155.84 = 21,158.40/x
  3. Step 3: Cross multiply
    32,836.80x = 49,155.84 × 21,158.40
  4. Step 4: Simplify right side
    32,836.80x = 1,040,058,925.06
  5. Step 5: Solve for x
    x = 1,040,058,925.06/32,836.80
  6. Step 6: Final answer
    x = 31,673.58

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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.