Home / 10,123.79-15,190.07-5,438.33

Finding the Fourth Proportional to 10,123.79, 15,190.07 and 5,438.33

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Solution

The fourth proportional to 10,123.79, 15,190.07 and 5,438.33 is: 8,159.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,123.79 : 15,190.07 = 5,438.33 : x
  2. Step 2: Convert to fraction form
    10,123.79/15,190.07 = 5,438.33/x
  3. Step 3: Cross multiply
    10,123.79x = 15,190.07 × 5,438.33
  4. Step 4: Simplify right side
    10,123.79x = 82,608,510.24
  5. Step 5: Solve for x
    x = 82,608,510.24/10,123.79
  6. Step 6: Final answer
    x = 8,159.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.