Home / 19,176.40-28,794.30-10,428.40

Finding the Fourth Proportional to 19,176.40, 28,794.30 and 10,428.40

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Solution

The fourth proportional to 19,176.40, 28,794.30 and 10,428.40 is: 15,658.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,176.40 : 28,794.30 = 10,428.40 : x
  2. Step 2: Convert to fraction form
    19,176.40/28,794.30 = 10,428.40/x
  3. Step 3: Cross multiply
    19,176.40x = 28,794.30 × 10,428.40
  4. Step 4: Simplify right side
    19,176.40x = 300,278,478.12
  5. Step 5: Solve for x
    x = 300,278,478.12/19,176.40
  6. Step 6: Final answer
    x = 15,658.75

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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.