Home / 28,154.36-42,231.83-11,503.02

Finding the Fourth Proportional to 28,154.36, 42,231.83 and 11,503.02

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Solution

The fourth proportional to 28,154.36, 42,231.83 and 11,503.02 is: 17,254.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,154.36 : 42,231.83 = 11,503.02 : x
  2. Step 2: Convert to fraction form
    28,154.36/42,231.83 = 11,503.02/x
  3. Step 3: Cross multiply
    28,154.36x = 42,231.83 × 11,503.02
  4. Step 4: Simplify right side
    28,154.36x = 485,793,585.13
  5. Step 5: Solve for x
    x = 485,793,585.13/28,154.36
  6. Step 6: Final answer
    x = 17,254.65

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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.