Home / 19,639.97-29,402.06-12,964.15

Finding the Fourth Proportional to 19,639.97, 29,402.06 and 12,964.15

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Solution

The fourth proportional to 19,639.97, 29,402.06 and 12,964.15 is: 19,408.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,639.97 : 29,402.06 = 12,964.15 : x
  2. Step 2: Convert to fraction form
    19,639.97/29,402.06 = 12,964.15/x
  3. Step 3: Cross multiply
    19,639.97x = 29,402.06 × 12,964.15
  4. Step 4: Simplify right side
    19,639.97x = 381,172,569.14
  5. Step 5: Solve for x
    x = 381,172,569.14/19,639.97
  6. Step 6: Final answer
    x = 19,408.01

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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.