Home / 28,638.80-42,937.40-19,255.52

Finding the Fourth Proportional to 28,638.80, 42,937.40 and 19,255.52

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Solution

The fourth proportional to 28,638.80, 42,937.40 and 19,255.52 is: 28,869.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,638.80 : 42,937.40 = 19,255.52 : x
  2. Step 2: Convert to fraction form
    28,638.80/42,937.40 = 19,255.52/x
  3. Step 3: Cross multiply
    28,638.80x = 42,937.40 × 19,255.52
  4. Step 4: Simplify right side
    28,638.80x = 826,781,964.45
  5. Step 5: Solve for x
    x = 826,781,964.45/28,638.80
  6. Step 6: Final answer
    x = 28,869.29

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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.