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Finding the Fourth Proportional to 12,643.58, 17,454.21 and 7,337.54

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Solution

The fourth proportional to 12,643.58, 17,454.21 and 7,337.54 is: 10,129.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,643.58 : 17,454.21 = 7,337.54 : x
  2. Step 2: Convert to fraction form
    12,643.58/17,454.21 = 7,337.54/x
  3. Step 3: Cross multiply
    12,643.58x = 17,454.21 × 7,337.54
  4. Step 4: Simplify right side
    12,643.58x = 128,070,964.04
  5. Step 5: Solve for x
    x = 128,070,964.04/12,643.58
  6. Step 6: Final answer
    x = 10,129.33

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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.