Home / 28,045.78-42,076.61-11,417.74

Finding the Fourth Proportional to 28,045.78, 42,076.61 and 11,417.74

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Solution

The fourth proportional to 28,045.78, 42,076.61 and 11,417.74 is: 17,129.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,045.78 : 42,076.61 = 11,417.74 : x
  2. Step 2: Convert to fraction form
    28,045.78/42,076.61 = 11,417.74/x
  3. Step 3: Cross multiply
    28,045.78x = 42,076.61 × 11,417.74
  4. Step 4: Simplify right side
    28,045.78x = 480,419,793.06
  5. Step 5: Solve for x
    x = 480,419,793.06/28,045.78
  6. Step 6: Final answer
    x = 17,129.84

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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.