Home / 10,666.25-15,986.41-7,547.15

Finding the Fourth Proportional to 10,666.25, 15,986.41 and 7,547.15

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Solution

The fourth proportional to 10,666.25, 15,986.41 and 7,547.15 is: 11,311.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,666.25 : 15,986.41 = 7,547.15 : x
  2. Step 2: Convert to fraction form
    10,666.25/15,986.41 = 7,547.15/x
  3. Step 3: Cross multiply
    10,666.25x = 15,986.41 × 7,547.15
  4. Step 4: Simplify right side
    10,666.25x = 120,651,855.33
  5. Step 5: Solve for x
    x = 120,651,855.33/10,666.25
  6. Step 6: Final answer
    x = 11,311.55

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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.