Home / 28,976.96-43,472.22-8,985.40

Finding the Fourth Proportional to 28,976.96, 43,472.22 and 8,985.40

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Solution

The fourth proportional to 28,976.96, 43,472.22 and 8,985.40 is: 13,480.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,976.96 : 43,472.22 = 8,985.40 : x
  2. Step 2: Convert to fraction form
    28,976.96/43,472.22 = 8,985.40/x
  3. Step 3: Cross multiply
    28,976.96x = 43,472.22 × 8,985.40
  4. Step 4: Simplify right side
    28,976.96x = 390,615,285.59
  5. Step 5: Solve for x
    x = 390,615,285.59/28,976.96
  6. Step 6: Final answer
    x = 13,480.20

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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.