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Finding the Fourth Proportional to 9,726.68, 13,420.68 and 6,195.08

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Solution

The fourth proportional to 9,726.68, 13,420.68 and 6,195.08 is: 8,547.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,726.68 : 13,420.68 = 6,195.08 : x
  2. Step 2: Convert to fraction form
    9,726.68/13,420.68 = 6,195.08/x
  3. Step 3: Cross multiply
    9,726.68x = 13,420.68 × 6,195.08
  4. Step 4: Simplify right side
    9,726.68x = 83,142,186.25
  5. Step 5: Solve for x
    x = 83,142,186.25/9,726.68
  6. Step 6: Final answer
    x = 8,547.85

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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.