Home / 28,148.48-42,175.96-19,811.04

Finding the Fourth Proportional to 28,148.48, 42,175.96 and 19,811.04

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Solution

The fourth proportional to 28,148.48, 42,175.96 and 19,811.04 is: 29,683.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,148.48 : 42,175.96 = 19,811.04 : x
  2. Step 2: Convert to fraction form
    28,148.48/42,175.96 = 19,811.04/x
  3. Step 3: Cross multiply
    28,148.48x = 42,175.96 × 19,811.04
  4. Step 4: Simplify right side
    28,148.48x = 835,549,630.60
  5. Step 5: Solve for x
    x = 835,549,630.60/28,148.48
  6. Step 6: Final answer
    x = 29,683.65

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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.