Home / 28,272.40-42,381.60-10,498.30

Finding the Fourth Proportional to 28,272.40, 42,381.60 and 10,498.30

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Solution

The fourth proportional to 28,272.40, 42,381.60 and 10,498.30 is: 15,737.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,272.40 : 42,381.60 = 10,498.30 : x
  2. Step 2: Convert to fraction form
    28,272.40/42,381.60 = 10,498.30/x
  3. Step 3: Cross multiply
    28,272.40x = 42,381.60 × 10,498.30
  4. Step 4: Simplify right side
    28,272.40x = 444,934,751.28
  5. Step 5: Solve for x
    x = 444,934,751.28/28,272.40
  6. Step 6: Final answer
    x = 15,737.42

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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.