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Finding the Fourth Proportional to 19,657.87, 27,127.70 and 10,705.37

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Solution

The fourth proportional to 19,657.87, 27,127.70 and 10,705.37 is: 14,773.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,657.87 : 27,127.70 = 10,705.37 : x
  2. Step 2: Convert to fraction form
    19,657.87/27,127.70 = 10,705.37/x
  3. Step 3: Cross multiply
    19,657.87x = 27,127.70 × 10,705.37
  4. Step 4: Simplify right side
    19,657.87x = 290,411,930.11
  5. Step 5: Solve for x
    x = 290,411,930.11/19,657.87
  6. Step 6: Final answer
    x = 14,773.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.