Home / 11,988.27-17,981.55-4,090.14

Finding the Fourth Proportional to 11,988.27, 17,981.55 and 4,090.14

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Solution

The fourth proportional to 11,988.27, 17,981.55 and 4,090.14 is: 6,134.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,988.27 : 17,981.55 = 4,090.14 : x
  2. Step 2: Convert to fraction form
    11,988.27/17,981.55 = 4,090.14/x
  3. Step 3: Cross multiply
    11,988.27x = 17,981.55 × 4,090.14
  4. Step 4: Simplify right side
    11,988.27x = 73,547,056.92
  5. Step 5: Solve for x
    x = 73,547,056.92/11,988.27
  6. Step 6: Final answer
    x = 6,134.92

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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.