Home / 10,987.18-15,167.55-6,270.55

Finding the Fourth Proportional to 10,987.18, 15,167.55 and 6,270.55

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Solution

The fourth proportional to 10,987.18, 15,167.55 and 6,270.55 is: 8,656.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987.18 : 15,167.55 = 6,270.55 : x
  2. Step 2: Convert to fraction form
    10,987.18/15,167.55 = 6,270.55/x
  3. Step 3: Cross multiply
    10,987.18x = 15,167.55 × 6,270.55
  4. Step 4: Simplify right side
    10,987.18x = 95,108,866.25
  5. Step 5: Solve for x
    x = 95,108,866.25/10,987.18
  6. Step 6: Final answer
    x = 8,656.35

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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.