Home / 28,102.12-42,152.20-7,042.35

Finding the Fourth Proportional to 28,102.12, 42,152.20 and 7,042.35

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Solution

The fourth proportional to 28,102.12, 42,152.20 and 7,042.35 is: 10,563.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,102.12 : 42,152.20 = 7,042.35 : x
  2. Step 2: Convert to fraction form
    28,102.12/42,152.20 = 7,042.35/x
  3. Step 3: Cross multiply
    28,102.12x = 42,152.20 × 7,042.35
  4. Step 4: Simplify right side
    28,102.12x = 296,850,545.67
  5. Step 5: Solve for x
    x = 296,850,545.67/28,102.12
  6. Step 6: Final answer
    x = 10,563.28

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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.