Home / 18,456.40-25,467.55-10,389.07

Finding the Fourth Proportional to 18,456.40, 25,467.55 and 10,389.07

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Solution

The fourth proportional to 18,456.40, 25,467.55 and 10,389.07 is: 14,335.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,456.40 : 25,467.55 = 10,389.07 : x
  2. Step 2: Convert to fraction form
    18,456.40/25,467.55 = 10,389.07/x
  3. Step 3: Cross multiply
    18,456.40x = 25,467.55 × 10,389.07
  4. Step 4: Simplify right side
    18,456.40x = 264,584,165.54
  5. Step 5: Solve for x
    x = 264,584,165.54/18,456.40
  6. Step 6: Final answer
    x = 14,335.63

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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.