Home / 40,820.36-61,217.57-13,111.88

Finding the Fourth Proportional to 40,820.36, 61,217.57 and 13,111.88

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Solution

The fourth proportional to 40,820.36, 61,217.57 and 13,111.88 is: 19,663.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,820.36 : 61,217.57 = 13,111.88 : x
  2. Step 2: Convert to fraction form
    40,820.36/61,217.57 = 13,111.88/x
  3. Step 3: Cross multiply
    40,820.36x = 61,217.57 × 13,111.88
  4. Step 4: Simplify right side
    40,820.36x = 802,677,158.42
  5. Step 5: Solve for x
    x = 802,677,158.42/40,820.36
  6. Step 6: Final answer
    x = 19,663.65

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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.