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Finding the Fourth Proportional to 18,107.80, 25,009.50 and 14,427.16

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Solution

The fourth proportional to 18,107.80, 25,009.50 and 14,427.16 is: 19,926.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,107.80 : 25,009.50 = 14,427.16 : x
  2. Step 2: Convert to fraction form
    18,107.80/25,009.50 = 14,427.16/x
  3. Step 3: Cross multiply
    18,107.80x = 25,009.50 × 14,427.16
  4. Step 4: Simplify right side
    18,107.80x = 360,816,058.02
  5. Step 5: Solve for x
    x = 360,816,058.02/18,107.80
  6. Step 6: Final answer
    x = 19,926.00

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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.