Home / 40,188.08-60,290.40-13,889.36

Finding the Fourth Proportional to 40,188.08, 60,290.40 and 13,889.36

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Solution

The fourth proportional to 40,188.08, 60,290.40 and 13,889.36 is: 20,836.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,188.08 : 60,290.40 = 13,889.36 : x
  2. Step 2: Convert to fraction form
    40,188.08/60,290.40 = 13,889.36/x
  3. Step 3: Cross multiply
    40,188.08x = 60,290.40 × 13,889.36
  4. Step 4: Simplify right side
    40,188.08x = 837,395,070.14
  5. Step 5: Solve for x
    x = 837,395,070.14/40,188.08
  6. Step 6: Final answer
    x = 20,836.90

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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.