Home / 28,170.40-42,240.08-19,295.90

Finding the Fourth Proportional to 28,170.40, 42,240.08 and 19,295.90

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Solution

The fourth proportional to 28,170.40, 42,240.08 and 19,295.90 is: 28,933.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,170.40 : 42,240.08 = 19,295.90 : x
  2. Step 2: Convert to fraction form
    28,170.40/42,240.08 = 19,295.90/x
  3. Step 3: Cross multiply
    28,170.40x = 42,240.08 × 19,295.90
  4. Step 4: Simplify right side
    28,170.40x = 815,060,359.67
  5. Step 5: Solve for x
    x = 815,060,359.67/28,170.40
  6. Step 6: Final answer
    x = 28,933.22

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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.