Home / 25,404.40-38,031.72-18,859.60

Finding the Fourth Proportional to 25,404.40, 38,031.72 and 18,859.60

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Solution

The fourth proportional to 25,404.40, 38,031.72 and 18,859.60 is: 28,233.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,404.40 : 38,031.72 = 18,859.60 : x
  2. Step 2: Convert to fraction form
    25,404.40/38,031.72 = 18,859.60/x
  3. Step 3: Cross multiply
    25,404.40x = 38,031.72 × 18,859.60
  4. Step 4: Simplify right side
    25,404.40x = 717,263,026.51
  5. Step 5: Solve for x
    x = 717,263,026.51/25,404.40
  6. Step 6: Final answer
    x = 28,233.81

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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.