Home / 13,591.09-20,386.45-4,712.88

Finding the Fourth Proportional to 13,591.09, 20,386.45 and 4,712.88

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Solution

The fourth proportional to 13,591.09, 20,386.45 and 4,712.88 is: 7,069.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,591.09 : 20,386.45 = 4,712.88 : x
  2. Step 2: Convert to fraction form
    13,591.09/20,386.45 = 4,712.88/x
  3. Step 3: Cross multiply
    13,591.09x = 20,386.45 × 4,712.88
  4. Step 4: Simplify right side
    13,591.09x = 96,078,974.82
  5. Step 5: Solve for x
    x = 96,078,974.82/13,591.09
  6. Step 6: Final answer
    x = 7,069.26

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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.