Home / 15,686.69-23,498.78-11,478.80

Finding the Fourth Proportional to 15,686.69, 23,498.78 and 11,478.80

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Solution

The fourth proportional to 15,686.69, 23,498.78 and 11,478.80 is: 17,195.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,686.69 : 23,498.78 = 11,478.80 : x
  2. Step 2: Convert to fraction form
    15,686.69/23,498.78 = 11,478.80/x
  3. Step 3: Cross multiply
    15,686.69x = 23,498.78 × 11,478.80
  4. Step 4: Simplify right side
    15,686.69x = 269,737,883.31
  5. Step 5: Solve for x
    x = 269,737,883.31/15,686.69
  6. Step 6: Final answer
    x = 17,195.34

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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.