Home / 28,081.80-42,104.70-13,271.40

Finding the Fourth Proportional to 28,081.80, 42,104.70 and 13,271.40

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Solution

The fourth proportional to 28,081.80, 42,104.70 and 13,271.40 is: 19,898.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,081.80 : 42,104.70 = 13,271.40 : x
  2. Step 2: Convert to fraction form
    28,081.80/42,104.70 = 13,271.40/x
  3. Step 3: Cross multiply
    28,081.80x = 42,104.70 × 13,271.40
  4. Step 4: Simplify right side
    28,081.80x = 558,788,315.58
  5. Step 5: Solve for x
    x = 558,788,315.58/28,081.80
  6. Step 6: Final answer
    x = 19,898.59

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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.