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Finding the Fourth Proportional to 19,392.71, 29,061.71 and 8,836.79

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Solution

The fourth proportional to 19,392.71, 29,061.71 and 8,836.79 is: 13,242.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,392.71 : 29,061.71 = 8,836.79 : x
  2. Step 2: Convert to fraction form
    19,392.71/29,061.71 = 8,836.79/x
  3. Step 3: Cross multiply
    19,392.71x = 29,061.71 × 8,836.79
  4. Step 4: Simplify right side
    19,392.71x = 256,812,038.82
  5. Step 5: Solve for x
    x = 256,812,038.82/19,392.71
  6. Step 6: Final answer
    x = 13,242.71

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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.