Home / 13,424.15-18,525.78-7,456.07

Finding the Fourth Proportional to 13,424.15, 18,525.78 and 7,456.07

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Solution

The fourth proportional to 13,424.15, 18,525.78 and 7,456.07 is: 10,289.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,424.15 : 18,525.78 = 7,456.07 : x
  2. Step 2: Convert to fraction form
    13,424.15/18,525.78 = 7,456.07/x
  3. Step 3: Cross multiply
    13,424.15x = 18,525.78 × 7,456.07
  4. Step 4: Simplify right side
    13,424.15x = 138,129,558.80
  5. Step 5: Solve for x
    x = 138,129,558.80/13,424.15
  6. Step 6: Final answer
    x = 10,289.63

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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.