Home / 28,681.50-42,930.12-15,321.09

Finding the Fourth Proportional to 28,681.50, 42,930.12 and 15,321.09

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Solution

The fourth proportional to 28,681.50, 42,930.12 and 15,321.09 is: 22,932.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,681.50 : 42,930.12 = 15,321.09 : x
  2. Step 2: Convert to fraction form
    28,681.50/42,930.12 = 15,321.09/x
  3. Step 3: Cross multiply
    28,681.50x = 42,930.12 × 15,321.09
  4. Step 4: Simplify right side
    28,681.50x = 657,736,232.23
  5. Step 5: Solve for x
    x = 657,736,232.23/28,681.50
  6. Step 6: Final answer
    x = 22,932.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.