Home / 28,545-39,392.12-15,972.72

Finding the Fourth Proportional to 28,545, 39,392.12 and 15,972.72

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Solution

The fourth proportional to 28,545, 39,392.12 and 15,972.72 is: 22,042.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,545 : 39,392.12 = 15,972.72 : x
  2. Step 2: Convert to fraction form
    28,545/39,392.12 = 15,972.72/x
  3. Step 3: Cross multiply
    28,545x = 39,392.12 × 15,972.72
  4. Step 4: Simplify right side
    28,545x = 629,199,302.97
  5. Step 5: Solve for x
    x = 629,199,302.97/28,545
  6. Step 6: Final answer
    x = 22,042.36

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1.5x scale

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.