Home / 28,283.52-39,032.64-15,708

Finding the Fourth Proportional to 28,283.52, 39,032.64 and 15,708

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Solution

The fourth proportional to 28,283.52, 39,032.64 and 15,708 is: 21,677.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,283.52 : 39,032.64 = 15,708 : x
  2. Step 2: Convert to fraction form
    28,283.52/39,032.64 = 15,708/x
  3. Step 3: Cross multiply
    28,283.52x = 39,032.64 × 15,708
  4. Step 4: Simplify right side
    28,283.52x = 613,124,709.12
  5. Step 5: Solve for x
    x = 613,124,709.12/28,283.52
  6. Step 6: Final answer
    x = 21,677.81

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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.