Home / 18,788.28-25,926.54-10,405.08

Finding the Fourth Proportional to 18,788.28, 25,926.54 and 10,405.08

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Solution

The fourth proportional to 18,788.28, 25,926.54 and 10,405.08 is: 14,358.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,788.28 : 25,926.54 = 10,405.08 : x
  2. Step 2: Convert to fraction form
    18,788.28/25,926.54 = 10,405.08/x
  3. Step 3: Cross multiply
    18,788.28x = 25,926.54 × 10,405.08
  4. Step 4: Simplify right side
    18,788.28x = 269,767,722.82
  5. Step 5: Solve for x
    x = 269,767,722.82/18,788.28
  6. Step 6: Final answer
    x = 14,358.30

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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.