Home / 19,655.13-27,150.62-15,703.95

Finding the Fourth Proportional to 19,655.13, 27,150.62 and 15,703.95

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Solution

The fourth proportional to 19,655.13, 27,150.62 and 15,703.95 is: 21,692.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,655.13 : 27,150.62 = 15,703.95 : x
  2. Step 2: Convert to fraction form
    19,655.13/27,150.62 = 15,703.95/x
  3. Step 3: Cross multiply
    19,655.13x = 27,150.62 × 15,703.95
  4. Step 4: Simplify right side
    19,655.13x = 426,371,900.43
  5. Step 5: Solve for x
    x = 426,371,900.43/19,655.13
  6. Step 6: Final answer
    x = 21,692.65

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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.