Home / 9,911.07-14,863.10-7,129.40

Finding the Fourth Proportional to 9,911.07, 14,863.10 and 7,129.40

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Solution

The fourth proportional to 9,911.07, 14,863.10 and 7,129.40 is: 10,691.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,911.07 : 14,863.10 = 7,129.40 : x
  2. Step 2: Convert to fraction form
    9,911.07/14,863.10 = 7,129.40/x
  3. Step 3: Cross multiply
    9,911.07x = 14,863.10 × 7,129.40
  4. Step 4: Simplify right side
    9,911.07x = 105,964,875.18
  5. Step 5: Solve for x
    x = 105,964,875.18/9,911.07
  6. Step 6: Final answer
    x = 10,691.57

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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.