Home / 20,134.72-27,784.53-11,181.76

Finding the Fourth Proportional to 20,134.72, 27,784.53 and 11,181.76

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Solution

The fourth proportional to 20,134.72, 27,784.53 and 11,181.76 is: 15,430.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,134.72 : 27,784.53 = 11,181.76 : x
  2. Step 2: Convert to fraction form
    20,134.72/27,784.53 = 11,181.76/x
  3. Step 3: Cross multiply
    20,134.72x = 27,784.53 × 11,181.76
  4. Step 4: Simplify right side
    20,134.72x = 310,679,946.17
  5. Step 5: Solve for x
    x = 310,679,946.17/20,134.72
  6. Step 6: Final answer
    x = 15,430.06

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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.