Home / 21,357.45-29,474.91-15,718.02

Finding the Fourth Proportional to 21,357.45, 29,474.91 and 15,718.02

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Solution

The fourth proportional to 21,357.45, 29,474.91 and 15,718.02 is: 21,692.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,357.45 : 29,474.91 = 15,718.02 : x
  2. Step 2: Convert to fraction form
    21,357.45/29,474.91 = 15,718.02/x
  3. Step 3: Cross multiply
    21,357.45x = 29,474.91 × 15,718.02
  4. Step 4: Simplify right side
    21,357.45x = 463,287,224.88
  5. Step 5: Solve for x
    x = 463,287,224.88/21,357.45
  6. Step 6: Final answer
    x = 21,692.07

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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.