Home / 9,456.12-13,038.66-7,961.76

Finding the Fourth Proportional to 9,456.12, 13,038.66 and 7,961.76

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Solution

The fourth proportional to 9,456.12, 13,038.66 and 7,961.76 is: 10,978.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,456.12 : 13,038.66 = 7,961.76 : x
  2. Step 2: Convert to fraction form
    9,456.12/13,038.66 = 7,961.76/x
  3. Step 3: Cross multiply
    9,456.12x = 13,038.66 × 7,961.76
  4. Step 4: Simplify right side
    9,456.12x = 103,810,681.64
  5. Step 5: Solve for x
    x = 103,810,681.64/9,456.12
  6. Step 6: Final answer
    x = 10,978.15

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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.