Home / 15,400.18-21,252.97-8,685.66

Finding the Fourth Proportional to 15,400.18, 21,252.97 and 8,685.66

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Solution

The fourth proportional to 15,400.18, 21,252.97 and 8,685.66 is: 11,986.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,400.18 : 21,252.97 = 8,685.66 : x
  2. Step 2: Convert to fraction form
    15,400.18/21,252.97 = 8,685.66/x
  3. Step 3: Cross multiply
    15,400.18x = 21,252.97 × 8,685.66
  4. Step 4: Simplify right side
    15,400.18x = 184,596,161.97
  5. Step 5: Solve for x
    x = 184,596,161.97/15,400.18
  6. Step 6: Final answer
    x = 11,986.62

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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.