Home / 15,742.62-21,725.10-8,572.75

Finding the Fourth Proportional to 15,742.62, 21,725.10 and 8,572.75

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Solution

The fourth proportional to 15,742.62, 21,725.10 and 8,572.75 is: 11,830.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,742.62 : 21,725.10 = 8,572.75 : x
  2. Step 2: Convert to fraction form
    15,742.62/21,725.10 = 8,572.75/x
  3. Step 3: Cross multiply
    15,742.62x = 21,725.10 × 8,572.75
  4. Step 4: Simplify right side
    15,742.62x = 186,243,796.71
  5. Step 5: Solve for x
    x = 186,243,796.71/15,742.62
  6. Step 6: Final answer
    x = 11,830.55

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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.