Home / 19,518.15-29,274.80-5,479.28

Finding the Fourth Proportional to 19,518.15, 29,274.80 and 5,479.28

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Solution

The fourth proportional to 19,518.15, 29,274.80 and 5,479.28 is: 8,218.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,518.15 : 29,274.80 = 5,479.28 : x
  2. Step 2: Convert to fraction form
    19,518.15/29,274.80 = 5,479.28/x
  3. Step 3: Cross multiply
    19,518.15x = 29,274.80 × 5,479.28
  4. Step 4: Simplify right side
    19,518.15x = 160,404,826.14
  5. Step 5: Solve for x
    x = 160,404,826.14/19,518.15
  6. Step 6: Final answer
    x = 8,218.24

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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.