Home / 28,191.56-38,886.75-18,133.11

Finding the Fourth Proportional to 28,191.56, 38,886.75 and 18,133.11

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Solution

The fourth proportional to 28,191.56, 38,886.75 and 18,133.11 is: 25,012.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,191.56 : 38,886.75 = 18,133.11 : x
  2. Step 2: Convert to fraction form
    28,191.56/38,886.75 = 18,133.11/x
  3. Step 3: Cross multiply
    28,191.56x = 38,886.75 × 18,133.11
  4. Step 4: Simplify right side
    28,191.56x = 705,137,715.29
  5. Step 5: Solve for x
    x = 705,137,715.29/28,191.56
  6. Step 6: Final answer
    x = 25,012.37

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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.