Home / 20,439.49-30,642.70-6,392.29

Finding the Fourth Proportional to 20,439.49, 30,642.70 and 6,392.29

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Solution

The fourth proportional to 20,439.49, 30,642.70 and 6,392.29 is: 9,583.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439.49 : 30,642.70 = 6,392.29 : x
  2. Step 2: Convert to fraction form
    20,439.49/30,642.70 = 6,392.29/x
  3. Step 3: Cross multiply
    20,439.49x = 30,642.70 × 6,392.29
  4. Step 4: Simplify right side
    20,439.49x = 195,877,024.78
  5. Step 5: Solve for x
    x = 195,877,024.78/20,439.49
  6. Step 6: Final answer
    x = 9,583.26

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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.