Home / 28,191.85-38,887.05-18,133.36

Finding the Fourth Proportional to 28,191.85, 38,887.05 and 18,133.36

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Solution

The fourth proportional to 28,191.85, 38,887.05 and 18,133.36 is: 25,012.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,191.85 : 38,887.05 = 18,133.36 : x
  2. Step 2: Convert to fraction form
    28,191.85/38,887.05 = 18,133.36/x
  3. Step 3: Cross multiply
    28,191.85x = 38,887.05 × 18,133.36
  4. Step 4: Simplify right side
    28,191.85x = 705,152,876.99
  5. Step 5: Solve for x
    x = 705,152,876.99/28,191.85
  6. Step 6: Final answer
    x = 25,012.65

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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.