Home / 11,153.29-15,391.75-6,117.20

Finding the Fourth Proportional to 11,153.29, 15,391.75 and 6,117.20

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Solution

The fourth proportional to 11,153.29, 15,391.75 and 6,117.20 is: 8,441.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,153.29 : 15,391.75 = 6,117.20 : x
  2. Step 2: Convert to fraction form
    11,153.29/15,391.75 = 6,117.20/x
  3. Step 3: Cross multiply
    11,153.29x = 15,391.75 × 6,117.20
  4. Step 4: Simplify right side
    11,153.29x = 94,154,413.10
  5. Step 5: Solve for x
    x = 94,154,413.10/11,153.29
  6. Step 6: Final answer
    x = 8,441.85

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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.