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Finding the Fourth Proportional to 12,859.95, 17,746.65 and 7,194.68

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Solution

The fourth proportional to 12,859.95, 17,746.65 and 7,194.68 is: 9,928.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,859.95 : 17,746.65 = 7,194.68 : x
  2. Step 2: Convert to fraction form
    12,859.95/17,746.65 = 7,194.68/x
  3. Step 3: Cross multiply
    12,859.95x = 17,746.65 × 7,194.68
  4. Step 4: Simplify right side
    12,859.95x = 127,681,387.48
  5. Step 5: Solve for x
    x = 127,681,387.48/12,859.95
  6. Step 6: Final answer
    x = 9,928.60

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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.