Home / 40,808.61-61,213.59-12,729.42

Finding the Fourth Proportional to 40,808.61, 61,213.59 and 12,729.42

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Solution

The fourth proportional to 40,808.61, 61,213.59 and 12,729.42 is: 19,094.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,808.61 : 61,213.59 = 12,729.42 : x
  2. Step 2: Convert to fraction form
    40,808.61/61,213.59 = 12,729.42/x
  3. Step 3: Cross multiply
    40,808.61x = 61,213.59 × 12,729.42
  4. Step 4: Simplify right side
    40,808.61x = 779,213,496.82
  5. Step 5: Solve for x
    x = 779,213,496.82/40,808.61
  6. Step 6: Final answer
    x = 19,094.34

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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.