Home / 15,218.14-21,001.84-8,503.93

Finding the Fourth Proportional to 15,218.14, 21,001.84 and 8,503.93

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Solution

The fourth proportional to 15,218.14, 21,001.84 and 8,503.93 is: 11,735.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,218.14 : 21,001.84 = 8,503.93 : x
  2. Step 2: Convert to fraction form
    15,218.14/21,001.84 = 8,503.93/x
  3. Step 3: Cross multiply
    15,218.14x = 21,001.84 × 8,503.93
  4. Step 4: Simplify right side
    15,218.14x = 178,598,050.96
  5. Step 5: Solve for x
    x = 178,598,050.96/15,218.14
  6. Step 6: Final answer
    x = 11,735.87

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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.