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Finding the Fourth Proportional to 19,657.71, 29,486.17 and 4,866.63

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Solution

The fourth proportional to 19,657.71, 29,486.17 and 4,866.63 is: 7,299.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,657.71 : 29,486.17 = 4,866.63 : x
  2. Step 2: Convert to fraction form
    19,657.71/29,486.17 = 4,866.63/x
  3. Step 3: Cross multiply
    19,657.71x = 29,486.17 × 4,866.63
  4. Step 4: Simplify right side
    19,657.71x = 143,498,279.51
  5. Step 5: Solve for x
    x = 143,498,279.51/19,657.71
  6. Step 6: Final answer
    x = 7,299.85

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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.