Home / 20,623.90-28,388.74-17,966.70

Finding the Fourth Proportional to 20,623.90, 28,388.74 and 17,966.70

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Solution

The fourth proportional to 20,623.90, 28,388.74 and 17,966.70 is: 24,731.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623.90 : 28,388.74 = 17,966.70 : x
  2. Step 2: Convert to fraction form
    20,623.90/28,388.74 = 17,966.70/x
  3. Step 3: Cross multiply
    20,623.90x = 28,388.74 × 17,966.70
  4. Step 4: Simplify right side
    20,623.90x = 510,051,974.96
  5. Step 5: Solve for x
    x = 510,051,974.96/20,623.90
  6. Step 6: Final answer
    x = 24,731.11

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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.