Home / 13,079.28-18,045.30-7,413.58

Finding the Fourth Proportional to 13,079.28, 18,045.30 and 7,413.58

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Solution

The fourth proportional to 13,079.28, 18,045.30 and 7,413.58 is: 10,228.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,079.28 : 18,045.30 = 7,413.58 : x
  2. Step 2: Convert to fraction form
    13,079.28/18,045.30 = 7,413.58/x
  3. Step 3: Cross multiply
    13,079.28x = 18,045.30 × 7,413.58
  4. Step 4: Simplify right side
    13,079.28x = 133,780,275.17
  5. Step 5: Solve for x
    x = 133,780,275.17/13,079.28
  6. Step 6: Final answer
    x = 10,228.41

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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.