Home / 42,779.41-64,175.15-13,199.65

Finding the Fourth Proportional to 42,779.41, 64,175.15 and 13,199.65

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Solution

The fourth proportional to 42,779.41, 64,175.15 and 13,199.65 is: 19,801.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,779.41 : 64,175.15 = 13,199.65 : x
  2. Step 2: Convert to fraction form
    42,779.41/64,175.15 = 13,199.65/x
  3. Step 3: Cross multiply
    42,779.41x = 64,175.15 × 13,199.65
  4. Step 4: Simplify right side
    42,779.41x = 847,089,767.60
  5. Step 5: Solve for x
    x = 847,089,767.60/42,779.41
  6. Step 6: Final answer
    x = 19,801.34

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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.