Home / 10,087.13-13,920.23-5,671.13

Finding the Fourth Proportional to 10,087.13, 13,920.23 and 5,671.13

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Solution

The fourth proportional to 10,087.13, 13,920.23 and 5,671.13 is: 7,826.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,087.13 : 13,920.23 = 5,671.13 : x
  2. Step 2: Convert to fraction form
    10,087.13/13,920.23 = 5,671.13/x
  3. Step 3: Cross multiply
    10,087.13x = 13,920.23 × 5,671.13
  4. Step 4: Simplify right side
    10,087.13x = 78,943,378.54
  5. Step 5: Solve for x
    x = 78,943,378.54/10,087.13
  6. Step 6: Final answer
    x = 7,826.15

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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.