Home / 40,428.64-60,647.82-13,779.10

Finding the Fourth Proportional to 40,428.64, 60,647.82 and 13,779.10

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Solution

The fourth proportional to 40,428.64, 60,647.82 and 13,779.10 is: 20,670.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,428.64 : 60,647.82 = 13,779.10 : x
  2. Step 2: Convert to fraction form
    40,428.64/60,647.82 = 13,779.10/x
  3. Step 3: Cross multiply
    40,428.64x = 60,647.82 × 13,779.10
  4. Step 4: Simplify right side
    40,428.64x = 835,672,376.56
  5. Step 5: Solve for x
    x = 835,672,376.56/40,428.64
  6. Step 6: Final answer
    x = 20,670.31

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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.