Home / 15,351.88-21,186.42-8,637.94

Finding the Fourth Proportional to 15,351.88, 21,186.42 and 8,637.94

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Solution

The fourth proportional to 15,351.88, 21,186.42 and 8,637.94 is: 11,920.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,351.88 : 21,186.42 = 8,637.94 : x
  2. Step 2: Convert to fraction form
    15,351.88/21,186.42 = 8,637.94/x
  3. Step 3: Cross multiply
    15,351.88x = 21,186.42 × 8,637.94
  4. Step 4: Simplify right side
    15,351.88x = 183,007,024.77
  5. Step 5: Solve for x
    x = 183,007,024.77/15,351.88
  6. Step 6: Final answer
    x = 11,920.82

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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.