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Finding the Fourth Proportional to 14,603.75, 20,153.18 and 7,979.75

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Solution

The fourth proportional to 14,603.75, 20,153.18 and 7,979.75 is: 11,012.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,603.75 : 20,153.18 = 7,979.75 : x
  2. Step 2: Convert to fraction form
    14,603.75/20,153.18 = 7,979.75/x
  3. Step 3: Cross multiply
    14,603.75x = 20,153.18 × 7,979.75
  4. Step 4: Simplify right side
    14,603.75x = 160,817,338.11
  5. Step 5: Solve for x
    x = 160,817,338.11/14,603.75
  6. Step 6: Final answer
    x = 11,012.06

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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.