Home / 28,233.68-38,962.80-15,658.64

Finding the Fourth Proportional to 28,233.68, 38,962.80 and 15,658.64

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Solution

The fourth proportional to 28,233.68, 38,962.80 and 15,658.64 is: 21,609.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,233.68 : 38,962.80 = 15,658.64 : x
  2. Step 2: Convert to fraction form
    28,233.68/38,962.80 = 15,658.64/x
  3. Step 3: Cross multiply
    28,233.68x = 38,962.80 × 15,658.64
  4. Step 4: Simplify right side
    28,233.68x = 610,104,458.59
  5. Step 5: Solve for x
    x = 610,104,458.59/28,233.68
  6. Step 6: Final answer
    x = 21,609.10

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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.