Home / 11,117.50-16,681.10-4,190.38

Finding the Fourth Proportional to 11,117.50, 16,681.10 and 4,190.38

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Solution

The fourth proportional to 11,117.50, 16,681.10 and 4,190.38 is: 6,287.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,117.50 : 16,681.10 = 4,190.38 : x
  2. Step 2: Convert to fraction form
    11,117.50/16,681.10 = 4,190.38/x
  3. Step 3: Cross multiply
    11,117.50x = 16,681.10 × 4,190.38
  4. Step 4: Simplify right side
    11,117.50x = 69,900,147.82
  5. Step 5: Solve for x
    x = 69,900,147.82/11,117.50
  6. Step 6: Final answer
    x = 6,287.40

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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.