Home / 15,463.39-21,339.48-8,389.81

Finding the Fourth Proportional to 15,463.39, 21,339.48 and 8,389.81

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Solution

The fourth proportional to 15,463.39, 21,339.48 and 8,389.81 is: 11,577.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,463.39 : 21,339.48 = 8,389.81 : x
  2. Step 2: Convert to fraction form
    15,463.39/21,339.48 = 8,389.81/x
  3. Step 3: Cross multiply
    15,463.39x = 21,339.48 × 8,389.81
  4. Step 4: Simplify right side
    15,463.39x = 179,034,034.05
  5. Step 5: Solve for x
    x = 179,034,034.05/15,463.39
  6. Step 6: Final answer
    x = 11,577.93

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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.