Home / 15,397.84-21,249.08-8,324.32

Finding the Fourth Proportional to 15,397.84, 21,249.08 and 8,324.32

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Solution

The fourth proportional to 15,397.84, 21,249.08 and 8,324.32 is: 11,487.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,397.84 : 21,249.08 = 8,324.32 : x
  2. Step 2: Convert to fraction form
    15,397.84/21,249.08 = 8,324.32/x
  3. Step 3: Cross multiply
    15,397.84x = 21,249.08 × 8,324.32
  4. Step 4: Simplify right side
    15,397.84x = 176,884,141.63
  5. Step 5: Solve for x
    x = 176,884,141.63/15,397.84
  6. Step 6: Final answer
    x = 11,487.59

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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.