Home / 28,477.71-39,298.46-15,731.82

Finding the Fourth Proportional to 28,477.71, 39,298.46 and 15,731.82

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Solution

The fourth proportional to 28,477.71, 39,298.46 and 15,731.82 is: 21,709.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,477.71 : 39,298.46 = 15,731.82 : x
  2. Step 2: Convert to fraction form
    28,477.71/39,298.46 = 15,731.82/x
  3. Step 3: Cross multiply
    28,477.71x = 39,298.46 × 15,731.82
  4. Step 4: Simplify right side
    28,477.71x = 618,236,220.34
  5. Step 5: Solve for x
    x = 618,236,220.34/28,477.71
  6. Step 6: Final answer
    x = 21,709.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.