Home / 28,615.80-42,932.64-12,834.06

Finding the Fourth Proportional to 28,615.80, 42,932.64 and 12,834.06

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Solution

The fourth proportional to 28,615.80, 42,932.64 and 12,834.06 is: 19,255.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,615.80 : 42,932.64 = 12,834.06 : x
  2. Step 2: Convert to fraction form
    28,615.80/42,932.64 = 12,834.06/x
  3. Step 3: Cross multiply
    28,615.80x = 42,932.64 × 12,834.06
  4. Step 4: Simplify right side
    28,615.80x = 551,000,077.72
  5. Step 5: Solve for x
    x = 551,000,077.72/28,615.80
  6. Step 6: Final answer
    x = 19,255.10

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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.