Home / 10,188.96-15,266.16-8,115.36

Finding the Fourth Proportional to 10,188.96, 15,266.16 and 8,115.36

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Solution

The fourth proportional to 10,188.96, 15,266.16 and 8,115.36 is: 12,159.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,188.96 : 15,266.16 = 8,115.36 : x
  2. Step 2: Convert to fraction form
    10,188.96/15,266.16 = 8,115.36/x
  3. Step 3: Cross multiply
    10,188.96x = 15,266.16 × 8,115.36
  4. Step 4: Simplify right side
    10,188.96x = 123,890,384.22
  5. Step 5: Solve for x
    x = 123,890,384.22/10,188.96
  6. Step 6: Final answer
    x = 12,159.28

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1.5x scale

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.