Home / 18,979.61-28,442.66-8,973.68

Finding the Fourth Proportional to 18,979.61, 28,442.66 and 8,973.68

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Solution

The fourth proportional to 18,979.61, 28,442.66 and 8,973.68 is: 13,447.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979.61 : 28,442.66 = 8,973.68 : x
  2. Step 2: Convert to fraction form
    18,979.61/28,442.66 = 8,973.68/x
  3. Step 3: Cross multiply
    18,979.61x = 28,442.66 × 8,973.68
  4. Step 4: Simplify right side
    18,979.61x = 255,235,142.11
  5. Step 5: Solve for x
    x = 255,235,142.11/18,979.61
  6. Step 6: Final answer
    x = 13,447.86

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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.