Home / 25,120.67-34,666.95-13,791.21

Finding the Fourth Proportional to 25,120.67, 34,666.95 and 13,791.21

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Solution

The fourth proportional to 25,120.67, 34,666.95 and 13,791.21 is: 19,032.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,120.67 : 34,666.95 = 13,791.21 : x
  2. Step 2: Convert to fraction form
    25,120.67/34,666.95 = 13,791.21/x
  3. Step 3: Cross multiply
    25,120.67x = 34,666.95 × 13,791.21
  4. Step 4: Simplify right side
    25,120.67x = 478,099,187.51
  5. Step 5: Solve for x
    x = 478,099,187.51/25,120.67
  6. Step 6: Final answer
    x = 19,032.11

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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.