Home / 26,654.86-39,920.10-21,070.72

Finding the Fourth Proportional to 26,654.86, 39,920.10 and 21,070.72

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Solution

The fourth proportional to 26,654.86, 39,920.10 and 21,070.72 is: 31,556.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,654.86 : 39,920.10 = 21,070.72 : x
  2. Step 2: Convert to fraction form
    26,654.86/39,920.10 = 21,070.72/x
  3. Step 3: Cross multiply
    26,654.86x = 39,920.10 × 21,070.72
  4. Step 4: Simplify right side
    26,654.86x = 841,145,249.47
  5. Step 5: Solve for x
    x = 841,145,249.47/26,654.86
  6. Step 6: Final answer
    x = 31,556.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.