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Finding the Fourth Proportional to 18,111.81, 27,152.03 and 7,010.85

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Solution

The fourth proportional to 18,111.81, 27,152.03 and 7,010.85 is: 10,510.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,111.81 : 27,152.03 = 7,010.85 : x
  2. Step 2: Convert to fraction form
    18,111.81/27,152.03 = 7,010.85/x
  3. Step 3: Cross multiply
    18,111.81x = 27,152.03 × 7,010.85
  4. Step 4: Simplify right side
    18,111.81x = 190,358,774.47
  5. Step 5: Solve for x
    x = 190,358,774.47/18,111.81
  6. Step 6: Final answer
    x = 10,510.20

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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.