Home / 15,463.49-21,339.59-8,389.89

Finding the Fourth Proportional to 15,463.49, 21,339.59 and 8,389.89

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Solution

The fourth proportional to 15,463.49, 21,339.59 and 8,389.89 is: 11,578.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,463.49 : 21,339.59 = 8,389.89 : x
  2. Step 2: Convert to fraction form
    15,463.49/21,339.59 = 8,389.89/x
  3. Step 3: Cross multiply
    15,463.49x = 21,339.59 × 8,389.89
  4. Step 4: Simplify right side
    15,463.49x = 179,036,770.80
  5. Step 5: Solve for x
    x = 179,036,770.80/15,463.49
  6. Step 6: Final answer
    x = 11,578.04

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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.