Home / 11,112.81-15,335.67-6,397.08

Finding the Fourth Proportional to 11,112.81, 15,335.67 and 6,397.08

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Solution

The fourth proportional to 11,112.81, 15,335.67 and 6,397.08 is: 8,827.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,112.81 : 15,335.67 = 6,397.08 : x
  2. Step 2: Convert to fraction form
    11,112.81/15,335.67 = 6,397.08/x
  3. Step 3: Cross multiply
    11,112.81x = 15,335.67 × 6,397.08
  4. Step 4: Simplify right side
    11,112.81x = 98,103,507.84
  5. Step 5: Solve for x
    x = 98,103,507.84/11,112.81
  6. Step 6: Final answer
    x = 8,827.97

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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.