Home / 28,288.52-39,038.12-15,714.44

Finding the Fourth Proportional to 28,288.52, 39,038.12 and 15,714.44

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Solution

The fourth proportional to 28,288.52, 39,038.12 and 15,714.44 is: 21,685.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,288.52 : 39,038.12 = 15,714.44 : x
  2. Step 2: Convert to fraction form
    28,288.52/39,038.12 = 15,714.44/x
  3. Step 3: Cross multiply
    28,288.52x = 39,038.12 × 15,714.44
  4. Step 4: Simplify right side
    28,288.52x = 613,462,194.45
  5. Step 5: Solve for x
    x = 613,462,194.45/28,288.52
  6. Step 6: Final answer
    x = 21,685.91

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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.