Home / 15,306.84-21,110.22-13,751.64

Finding the Fourth Proportional to 15,306.84, 21,110.22 and 13,751.64

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Solution

The fourth proportional to 15,306.84, 21,110.22 and 13,751.64 is: 18,965.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,306.84 : 21,110.22 = 13,751.64 : x
  2. Step 2: Convert to fraction form
    15,306.84/21,110.22 = 13,751.64/x
  3. Step 3: Cross multiply
    15,306.84x = 21,110.22 × 13,751.64
  4. Step 4: Simplify right side
    15,306.84x = 290,300,145.76
  5. Step 5: Solve for x
    x = 290,300,145.76/15,306.84
  6. Step 6: Final answer
    x = 18,965.39

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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.