Home / 18,789.12-25,929.44-10,406.24

Finding the Fourth Proportional to 18,789.12, 25,929.44 and 10,406.24

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Solution

The fourth proportional to 18,789.12, 25,929.44 and 10,406.24 is: 14,360.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,789.12 : 25,929.44 = 10,406.24 : x
  2. Step 2: Convert to fraction form
    18,789.12/25,929.44 = 10,406.24/x
  3. Step 3: Cross multiply
    18,789.12x = 25,929.44 × 10,406.24
  4. Step 4: Simplify right side
    18,789.12x = 269,827,975.71
  5. Step 5: Solve for x
    x = 269,827,975.71/18,789.12
  6. Step 6: Final answer
    x = 14,360.86

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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.