Home / 20,490.24-28,282.08-19,251.20

Finding the Fourth Proportional to 20,490.24, 28,282.08 and 19,251.20

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Solution

The fourth proportional to 20,490.24, 28,282.08 and 19,251.20 is: 26,571.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,490.24 : 28,282.08 = 19,251.20 : x
  2. Step 2: Convert to fraction form
    20,490.24/28,282.08 = 19,251.20/x
  3. Step 3: Cross multiply
    20,490.24x = 28,282.08 × 19,251.20
  4. Step 4: Simplify right side
    20,490.24x = 544,463,978.50
  5. Step 5: Solve for x
    x = 544,463,978.50/20,490.24
  6. Step 6: Final answer
    x = 26,571.87

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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.