Home / 28,688.38-43,031.40-9,972.66

Finding the Fourth Proportional to 28,688.38, 43,031.40 and 9,972.66

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Solution

The fourth proportional to 28,688.38, 43,031.40 and 9,972.66 is: 14,958.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,688.38 : 43,031.40 = 9,972.66 : x
  2. Step 2: Convert to fraction form
    28,688.38/43,031.40 = 9,972.66/x
  3. Step 3: Cross multiply
    28,688.38x = 43,031.40 × 9,972.66
  4. Step 4: Simplify right side
    28,688.38x = 429,137,521.52
  5. Step 5: Solve for x
    x = 429,137,521.52/28,688.38
  6. Step 6: Final answer
    x = 14,958.58

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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.