Home / 28,192.56-38,888.13-18,134.11

Finding the Fourth Proportional to 28,192.56, 38,888.13 and 18,134.11

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Solution

The fourth proportional to 28,192.56, 38,888.13 and 18,134.11 is: 25,013.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,192.56 : 38,888.13 = 18,134.11 : x
  2. Step 2: Convert to fraction form
    28,192.56/38,888.13 = 18,134.11/x
  3. Step 3: Cross multiply
    28,192.56x = 38,888.13 × 18,134.11
  4. Step 4: Simplify right side
    28,192.56x = 705,201,627.11
  5. Step 5: Solve for x
    x = 705,201,627.11/28,192.56
  6. Step 6: Final answer
    x = 25,013.75

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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.