Home / 19,320.75-28,970.46-5,990.06

Finding the Fourth Proportional to 19,320.75, 28,970.46 and 5,990.06

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Solution

The fourth proportional to 19,320.75, 28,970.46 and 5,990.06 is: 8,981.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,320.75 : 28,970.46 = 5,990.06 : x
  2. Step 2: Convert to fraction form
    19,320.75/28,970.46 = 5,990.06/x
  3. Step 3: Cross multiply
    19,320.75x = 28,970.46 × 5,990.06
  4. Step 4: Simplify right side
    19,320.75x = 173,534,648.78
  5. Step 5: Solve for x
    x = 173,534,648.78/19,320.75
  6. Step 6: Final answer
    x = 8,981.78

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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.