Home / 12,159.08-16,778.56-7,442.72

Finding the Fourth Proportional to 12,159.08, 16,778.56 and 7,442.72

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Solution

The fourth proportional to 12,159.08, 16,778.56 and 7,442.72 is: 10,270.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,159.08 : 16,778.56 = 7,442.72 : x
  2. Step 2: Convert to fraction form
    12,159.08/16,778.56 = 7,442.72/x
  3. Step 3: Cross multiply
    12,159.08x = 16,778.56 × 7,442.72
  4. Step 4: Simplify right side
    12,159.08x = 124,878,124.08
  5. Step 5: Solve for x
    x = 124,878,124.08/12,159.08
  6. Step 6: Final answer
    x = 10,270.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.