Home / 28,413.21-42,618.27-8,691.76

Finding the Fourth Proportional to 28,413.21, 42,618.27 and 8,691.76

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Solution

The fourth proportional to 28,413.21, 42,618.27 and 8,691.76 is: 13,037.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,413.21 : 42,618.27 = 8,691.76 : x
  2. Step 2: Convert to fraction form
    28,413.21/42,618.27 = 8,691.76/x
  3. Step 3: Cross multiply
    28,413.21x = 42,618.27 × 8,691.76
  4. Step 4: Simplify right side
    28,413.21x = 370,427,774.46
  5. Step 5: Solve for x
    x = 370,427,774.46/28,413.21
  6. Step 6: Final answer
    x = 13,037.17

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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.