Home / 28,701.81-43,072.31-9,981.66

Finding the Fourth Proportional to 28,701.81, 43,072.31 and 9,981.66

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Solution

The fourth proportional to 28,701.81, 43,072.31 and 9,981.66 is: 14,979.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,701.81 : 43,072.31 = 9,981.66 : x
  2. Step 2: Convert to fraction form
    28,701.81/43,072.31 = 9,981.66/x
  3. Step 3: Cross multiply
    28,701.81x = 43,072.31 × 9,981.66
  4. Step 4: Simplify right side
    28,701.81x = 429,933,284.16
  5. Step 5: Solve for x
    x = 429,933,284.16/28,701.81
  6. Step 6: Final answer
    x = 14,979.31

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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.