Home / 28,070.76-42,108.21-8,079.45

Finding the Fourth Proportional to 28,070.76, 42,108.21 and 8,079.45

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Solution

The fourth proportional to 28,070.76, 42,108.21 and 8,079.45 is: 12,119.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,070.76 : 42,108.21 = 8,079.45 : x
  2. Step 2: Convert to fraction form
    28,070.76/42,108.21 = 8,079.45/x
  3. Step 3: Cross multiply
    28,070.76x = 42,108.21 × 8,079.45
  4. Step 4: Simplify right side
    28,070.76x = 340,211,177.28
  5. Step 5: Solve for x
    x = 340,211,177.28/28,070.76
  6. Step 6: Final answer
    x = 12,119.77

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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.