Home / 20,064.76-27,689.52-11,112.40

Finding the Fourth Proportional to 20,064.76, 27,689.52 and 11,112.40

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Solution

The fourth proportional to 20,064.76, 27,689.52 and 11,112.40 is: 15,335.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,064.76 : 27,689.52 = 11,112.40 : x
  2. Step 2: Convert to fraction form
    20,064.76/27,689.52 = 11,112.40/x
  3. Step 3: Cross multiply
    20,064.76x = 27,689.52 × 11,112.40
  4. Step 4: Simplify right side
    20,064.76x = 307,697,022.05
  5. Step 5: Solve for x
    x = 307,697,022.05/20,064.76
  6. Step 6: Final answer
    x = 15,335.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.