Home / 42,289.62-63,442.80-18,916.26

Finding the Fourth Proportional to 42,289.62, 63,442.80 and 18,916.26

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Solution

The fourth proportional to 42,289.62, 63,442.80 and 18,916.26 is: 28,378.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,289.62 : 63,442.80 = 18,916.26 : x
  2. Step 2: Convert to fraction form
    42,289.62/63,442.80 = 18,916.26/x
  3. Step 3: Cross multiply
    42,289.62x = 63,442.80 × 18,916.26
  4. Step 4: Simplify right side
    42,289.62x = 1,200,100,499.93
  5. Step 5: Solve for x
    x = 1,200,100,499.93/42,289.62
  6. Step 6: Final answer
    x = 28,378.13

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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.