Home / 28,425.02-39,226.81-15,678.73

Finding the Fourth Proportional to 28,425.02, 39,226.81 and 15,678.73

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Solution

The fourth proportional to 28,425.02, 39,226.81 and 15,678.73 is: 21,636.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,425.02 : 39,226.81 = 15,678.73 : x
  2. Step 2: Convert to fraction form
    28,425.02/39,226.81 = 15,678.73/x
  3. Step 3: Cross multiply
    28,425.02x = 39,226.81 × 15,678.73
  4. Step 4: Simplify right side
    28,425.02x = 615,026,366.62
  5. Step 5: Solve for x
    x = 615,026,366.62/28,425.02
  6. Step 6: Final answer
    x = 21,636.79

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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.