Home / 18,702.45-25,809.66-11,153.16

Finding the Fourth Proportional to 18,702.45, 25,809.66 and 11,153.16

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Solution

The fourth proportional to 18,702.45, 25,809.66 and 11,153.16 is: 15,391.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702.45 : 25,809.66 = 11,153.16 : x
  2. Step 2: Convert to fraction form
    18,702.45/25,809.66 = 11,153.16/x
  3. Step 3: Cross multiply
    18,702.45x = 25,809.66 × 11,153.16
  4. Step 4: Simplify right side
    18,702.45x = 287,859,267.53
  5. Step 5: Solve for x
    x = 287,859,267.53/18,702.45
  6. Step 6: Final answer
    x = 15,391.53

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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.