Home / 11,108.55-15,328.65-6,631.68

Finding the Fourth Proportional to 11,108.55, 15,328.65 and 6,631.68

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Solution

The fourth proportional to 11,108.55, 15,328.65 and 6,631.68 is: 9,151.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,108.55 : 15,328.65 = 6,631.68 : x
  2. Step 2: Convert to fraction form
    11,108.55/15,328.65 = 6,631.68/x
  3. Step 3: Cross multiply
    11,108.55x = 15,328.65 × 6,631.68
  4. Step 4: Simplify right side
    11,108.55x = 101,654,701.63
  5. Step 5: Solve for x
    x = 101,654,701.63/11,108.55
  6. Step 6: Final answer
    x = 9,151.03

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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.