Home / 13,442.18-20,160.56-12,775.32

Finding the Fourth Proportional to 13,442.18, 20,160.56 and 12,775.32

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Solution

The fourth proportional to 13,442.18, 20,160.56 and 12,775.32 is: 19,160.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,442.18 : 20,160.56 = 12,775.32 : x
  2. Step 2: Convert to fraction form
    13,442.18/20,160.56 = 12,775.32/x
  3. Step 3: Cross multiply
    13,442.18x = 20,160.56 × 12,775.32
  4. Step 4: Simplify right side
    13,442.18x = 257,557,637.32
  5. Step 5: Solve for x
    x = 257,557,637.32/13,442.18
  6. Step 6: Final answer
    x = 19,160.41

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1.5x scale

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.