Home / 28,428.52-39,230.88-15,682.94

Finding the Fourth Proportional to 28,428.52, 39,230.88 and 15,682.94

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Solution

The fourth proportional to 28,428.52, 39,230.88 and 15,682.94 is: 21,642.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,428.52 : 39,230.88 = 15,682.94 : x
  2. Step 2: Convert to fraction form
    28,428.52/39,230.88 = 15,682.94/x
  3. Step 3: Cross multiply
    28,428.52x = 39,230.88 × 15,682.94
  4. Step 4: Simplify right side
    28,428.52x = 615,255,537.19
  5. Step 5: Solve for x
    x = 615,255,537.19/28,428.52
  6. Step 6: Final answer
    x = 21,642.19

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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.