Home / 13,117.38-19,681.87-6,875.90

Finding the Fourth Proportional to 13,117.38, 19,681.87 and 6,875.90

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Solution

The fourth proportional to 13,117.38, 19,681.87 and 6,875.90 is: 10,316.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,117.38 : 19,681.87 = 6,875.90 : x
  2. Step 2: Convert to fraction form
    13,117.38/19,681.87 = 6,875.90/x
  3. Step 3: Cross multiply
    13,117.38x = 19,681.87 × 6,875.90
  4. Step 4: Simplify right side
    13,117.38x = 135,330,680.75
  5. Step 5: Solve for x
    x = 135,330,680.75/13,117.38
  6. Step 6: Final answer
    x = 10,316.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.