Home / 15,391.42-23,071.32-11,685.80

Finding the Fourth Proportional to 15,391.42, 23,071.32 and 11,685.80

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Solution

The fourth proportional to 15,391.42, 23,071.32 and 11,685.80 is: 17,516.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,391.42 : 23,071.32 = 11,685.80 : x
  2. Step 2: Convert to fraction form
    15,391.42/23,071.32 = 11,685.80/x
  3. Step 3: Cross multiply
    15,391.42x = 23,071.32 × 11,685.80
  4. Step 4: Simplify right side
    15,391.42x = 269,606,888.93
  5. Step 5: Solve for x
    x = 269,606,888.93/15,391.42
  6. Step 6: Final answer
    x = 17,516.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.