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Finding the Fourth Proportional to 19,649.79, 29,453.63 and 9,767.79

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Solution

The fourth proportional to 19,649.79, 29,453.63 and 9,767.79 is: 14,641.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,649.79 : 29,453.63 = 9,767.79 : x
  2. Step 2: Convert to fraction form
    19,649.79/29,453.63 = 9,767.79/x
  3. Step 3: Cross multiply
    19,649.79x = 29,453.63 × 9,767.79
  4. Step 4: Simplify right side
    19,649.79x = 287,696,823.74
  5. Step 5: Solve for x
    x = 287,696,823.74/19,649.79
  6. Step 6: Final answer
    x = 14,641.22

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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.