Home / 17,587.80-26,343.30-13,661.40

Finding the Fourth Proportional to 17,587.80, 26,343.30 and 13,661.40

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Solution

The fourth proportional to 17,587.80, 26,343.30 and 13,661.40 is: 20,462.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,587.80 : 26,343.30 = 13,661.40 : x
  2. Step 2: Convert to fraction form
    17,587.80/26,343.30 = 13,661.40/x
  3. Step 3: Cross multiply
    17,587.80x = 26,343.30 × 13,661.40
  4. Step 4: Simplify right side
    17,587.80x = 359,886,358.62
  5. Step 5: Solve for x
    x = 359,886,358.62/17,587.80
  6. Step 6: Final answer
    x = 20,462.27

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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.