Home / 32,870.80-49,233.30-13,139.20

Finding the Fourth Proportional to 32,870.80, 49,233.30 and 13,139.20

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Solution

The fourth proportional to 32,870.80, 49,233.30 and 13,139.20 is: 19,679.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,870.80 : 49,233.30 = 13,139.20 : x
  2. Step 2: Convert to fraction form
    32,870.80/49,233.30 = 13,139.20/x
  3. Step 3: Cross multiply
    32,870.80x = 49,233.30 × 13,139.20
  4. Step 4: Simplify right side
    32,870.80x = 646,886,175.36
  5. Step 5: Solve for x
    x = 646,886,175.36/32,870.80
  6. Step 6: Final answer
    x = 19,679.66

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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.