Home / 26,421.72-39,637.76-9,781.89

Finding the Fourth Proportional to 26,421.72, 39,637.76 and 9,781.89

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Solution

The fourth proportional to 26,421.72, 39,637.76 and 9,781.89 is: 14,674.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,421.72 : 39,637.76 = 9,781.89 : x
  2. Step 2: Convert to fraction form
    26,421.72/39,637.76 = 9,781.89/x
  3. Step 3: Cross multiply
    26,421.72x = 39,637.76 × 9,781.89
  4. Step 4: Simplify right side
    26,421.72x = 387,732,208.17
  5. Step 5: Solve for x
    x = 387,732,208.17/26,421.72
  6. Step 6: Final answer
    x = 14,674.75

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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.