Home / 28,719.77-43,079.72-9,000.05

Finding the Fourth Proportional to 28,719.77, 43,079.72 and 9,000.05

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Solution

The fourth proportional to 28,719.77, 43,079.72 and 9,000.05 is: 13,500.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,719.77 : 43,079.72 = 9,000.05 : x
  2. Step 2: Convert to fraction form
    28,719.77/43,079.72 = 9,000.05/x
  3. Step 3: Cross multiply
    28,719.77x = 43,079.72 × 9,000.05
  4. Step 4: Simplify right side
    28,719.77x = 387,719,373.59
  5. Step 5: Solve for x
    x = 387,719,373.59/28,719.77
  6. Step 6: Final answer
    x = 13,500.09

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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.