Home / 8,756.68-13,128.54-5,293.12

Finding the Fourth Proportional to 8,756.68, 13,128.54 and 5,293.12

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Solution

The fourth proportional to 8,756.68, 13,128.54 and 5,293.12 is: 7,935.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,756.68 : 13,128.54 = 5,293.12 : x
  2. Step 2: Convert to fraction form
    8,756.68/13,128.54 = 5,293.12/x
  3. Step 3: Cross multiply
    8,756.68x = 13,128.54 × 5,293.12
  4. Step 4: Simplify right side
    8,756.68x = 69,490,937.64
  5. Step 5: Solve for x
    x = 69,490,937.64/8,756.68
  6. Step 6: Final answer
    x = 7,935.76

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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.