Home / 28,425.52-39,226.74-15,679.94

Finding the Fourth Proportional to 28,425.52, 39,226.74 and 15,679.94

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Solution

The fourth proportional to 28,425.52, 39,226.74 and 15,679.94 is: 21,638.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,425.52 : 39,226.74 = 15,679.94 : x
  2. Step 2: Convert to fraction form
    28,425.52/39,226.74 = 15,679.94/x
  3. Step 3: Cross multiply
    28,425.52x = 39,226.74 × 15,679.94
  4. Step 4: Simplify right side
    28,425.52x = 615,072,929.60
  5. Step 5: Solve for x
    x = 615,072,929.60/28,425.52
  6. Step 6: Final answer
    x = 21,638.05

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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.