Home / 19,953.78-29,928.24-5,161.47

Finding the Fourth Proportional to 19,953.78, 29,928.24 and 5,161.47

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Solution

The fourth proportional to 19,953.78, 29,928.24 and 5,161.47 is: 7,741.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,953.78 : 29,928.24 = 5,161.47 : x
  2. Step 2: Convert to fraction form
    19,953.78/29,928.24 = 5,161.47/x
  3. Step 3: Cross multiply
    19,953.78x = 29,928.24 × 5,161.47
  4. Step 4: Simplify right side
    19,953.78x = 154,473,712.91
  5. Step 5: Solve for x
    x = 154,473,712.91/19,953.78
  6. Step 6: Final answer
    x = 7,741.58

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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.