Home / 19,013.76-28,520.96-5,162.40

Finding the Fourth Proportional to 19,013.76, 28,520.96 and 5,162.40

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Solution

The fourth proportional to 19,013.76, 28,520.96 and 5,162.40 is: 7,743.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,013.76 : 28,520.96 = 5,162.40 : x
  2. Step 2: Convert to fraction form
    19,013.76/28,520.96 = 5,162.40/x
  3. Step 3: Cross multiply
    19,013.76x = 28,520.96 × 5,162.40
  4. Step 4: Simplify right side
    19,013.76x = 147,236,603.90
  5. Step 5: Solve for x
    x = 147,236,603.90/19,013.76
  6. Step 6: Final answer
    x = 7,743.69

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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.