Home / 19,478.11-29,222.07-5,438.12

Finding the Fourth Proportional to 19,478.11, 29,222.07 and 5,438.12

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Solution

The fourth proportional to 19,478.11, 29,222.07 and 5,438.12 is: 8,158.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,478.11 : 29,222.07 = 5,438.12 : x
  2. Step 2: Convert to fraction form
    19,478.11/29,222.07 = 5,438.12/x
  3. Step 3: Cross multiply
    19,478.11x = 29,222.07 × 5,438.12
  4. Step 4: Simplify right side
    19,478.11x = 158,913,123.31
  5. Step 5: Solve for x
    x = 158,913,123.31/19,478.11
  6. Step 6: Final answer
    x = 8,158.55

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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.