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Finding the Fourth Proportional to 42,953.92, 64,404.99 and 19,257.18

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Solution

The fourth proportional to 42,953.92, 64,404.99 and 19,257.18 is: 28,874.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,953.92 : 64,404.99 = 19,257.18 : x
  2. Step 2: Convert to fraction form
    42,953.92/64,404.99 = 19,257.18/x
  3. Step 3: Cross multiply
    42,953.92x = 64,404.99 × 19,257.18
  4. Step 4: Simplify right side
    42,953.92x = 1,240,258,067.02
  5. Step 5: Solve for x
    x = 1,240,258,067.02/42,953.92
  6. Step 6: Final answer
    x = 28,874.16

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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.