Home / 27,908.12-38,484.24-19,419.86

Finding the Fourth Proportional to 27,908.12, 38,484.24 and 19,419.86

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Solution

The fourth proportional to 27,908.12, 38,484.24 and 19,419.86 is: 26,779.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,908.12 : 38,484.24 = 19,419.86 : x
  2. Step 2: Convert to fraction form
    27,908.12/38,484.24 = 19,419.86/x
  3. Step 3: Cross multiply
    27,908.12x = 38,484.24 × 19,419.86
  4. Step 4: Simplify right side
    27,908.12x = 747,358,553.01
  5. Step 5: Solve for x
    x = 747,358,553.01/27,908.12
  6. Step 6: Final answer
    x = 26,779.25

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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.