Home / 28,002.02-42,009.68-8,011.80

Finding the Fourth Proportional to 28,002.02, 42,009.68 and 8,011.80

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Solution

The fourth proportional to 28,002.02, 42,009.68 and 8,011.80 is: 12,019.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,002.02 : 42,009.68 = 8,011.80 : x
  2. Step 2: Convert to fraction form
    28,002.02/42,009.68 = 8,011.80/x
  3. Step 3: Cross multiply
    28,002.02x = 42,009.68 × 8,011.80
  4. Step 4: Simplify right side
    28,002.02x = 336,573,174.25
  5. Step 5: Solve for x
    x = 336,573,174.25/28,002.02
  6. Step 6: Final answer
    x = 12,019.61

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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.