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Finding the Fourth Proportional to 18,106.80, 25,008.12 and 14,426.16

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Solution

The fourth proportional to 18,106.80, 25,008.12 and 14,426.16 is: 19,924.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,106.80 : 25,008.12 = 14,426.16 : x
  2. Step 2: Convert to fraction form
    18,106.80/25,008.12 = 14,426.16/x
  3. Step 3: Cross multiply
    18,106.80x = 25,008.12 × 14,426.16
  4. Step 4: Simplify right side
    18,106.80x = 360,771,140.42
  5. Step 5: Solve for x
    x = 360,771,140.42/18,106.80
  6. Step 6: Final answer
    x = 19,924.62

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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.