Home / 26,455.18-39,864.80-21,878.12

Finding the Fourth Proportional to 26,455.18, 39,864.80 and 21,878.12

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Solution

The fourth proportional to 26,455.18, 39,864.80 and 21,878.12 is: 32,967.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,455.18 : 39,864.80 = 21,878.12 : x
  2. Step 2: Convert to fraction form
    26,455.18/39,864.80 = 21,878.12/x
  3. Step 3: Cross multiply
    26,455.18x = 39,864.80 × 21,878.12
  4. Step 4: Simplify right side
    26,455.18x = 872,166,768.17
  5. Step 5: Solve for x
    x = 872,166,768.17/26,455.18
  6. Step 6: Final answer
    x = 32,967.71

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.