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Finding the Fourth Proportional to 18,581.60, 27,904.80 and 17,998.40

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Solution

The fourth proportional to 18,581.60, 27,904.80 and 17,998.40 is: 27,028.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,581.60 : 27,904.80 = 17,998.40 : x
  2. Step 2: Convert to fraction form
    18,581.60/27,904.80 = 17,998.40/x
  3. Step 3: Cross multiply
    18,581.60x = 27,904.80 × 17,998.40
  4. Step 4: Simplify right side
    18,581.60x = 502,241,752.32
  5. Step 5: Solve for x
    x = 502,241,752.32/18,581.60
  6. Step 6: Final answer
    x = 27,028.98

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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.