Home / 21,780.09-30,074.14-17,747.45

Finding the Fourth Proportional to 21,780.09, 30,074.14 and 17,747.45

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Solution

The fourth proportional to 21,780.09, 30,074.14 and 17,747.45 is: 24,505.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,780.09 : 30,074.14 = 17,747.45 : x
  2. Step 2: Convert to fraction form
    21,780.09/30,074.14 = 17,747.45/x
  3. Step 3: Cross multiply
    21,780.09x = 30,074.14 × 17,747.45
  4. Step 4: Simplify right side
    21,780.09x = 533,739,349.87
  5. Step 5: Solve for x
    x = 533,739,349.87/21,780.09
  6. Step 6: Final answer
    x = 24,505.84

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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.