Home / 12,820.16-19,230.40-4,923.20

Finding the Fourth Proportional to 12,820.16, 19,230.40 and 4,923.20

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Solution

The fourth proportional to 12,820.16, 19,230.40 and 4,923.20 is: 7,384.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,820.16 : 19,230.40 = 4,923.20 : x
  2. Step 2: Convert to fraction form
    12,820.16/19,230.40 = 4,923.20/x
  3. Step 3: Cross multiply
    12,820.16x = 19,230.40 × 4,923.20
  4. Step 4: Simplify right side
    12,820.16x = 94,675,105.28
  5. Step 5: Solve for x
    x = 94,675,105.28/12,820.16
  6. Step 6: Final answer
    x = 7,384.86

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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.