Home / 21,110.08-29,145.18-13,559.46

Finding the Fourth Proportional to 21,110.08, 29,145.18 and 13,559.46

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Solution

The fourth proportional to 21,110.08, 29,145.18 and 13,559.46 is: 18,720.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,110.08 : 29,145.18 = 13,559.46 : x
  2. Step 2: Convert to fraction form
    21,110.08/29,145.18 = 13,559.46/x
  3. Step 3: Cross multiply
    21,110.08x = 29,145.18 × 13,559.46
  4. Step 4: Simplify right side
    21,110.08x = 395,192,902.40
  5. Step 5: Solve for x
    x = 395,192,902.40/21,110.08
  6. Step 6: Final answer
    x = 18,720.58

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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.