Home / 19,288.20-28,883.70-15,400.20

Finding the Fourth Proportional to 19,288.20, 28,883.70 and 15,400.20

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Solution

The fourth proportional to 19,288.20, 28,883.70 and 15,400.20 is: 23,061.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,288.20 : 28,883.70 = 15,400.20 : x
  2. Step 2: Convert to fraction form
    19,288.20/28,883.70 = 15,400.20/x
  3. Step 3: Cross multiply
    19,288.20x = 28,883.70 × 15,400.20
  4. Step 4: Simplify right side
    19,288.20x = 444,814,756.74
  5. Step 5: Solve for x
    x = 444,814,756.74/19,288.20
  6. Step 6: Final answer
    x = 23,061.50

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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.