Home / 12,564.40-18,851.76-5,540.80

Finding the Fourth Proportional to 12,564.40, 18,851.76 and 5,540.80

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Solution

The fourth proportional to 12,564.40, 18,851.76 and 5,540.80 is: 8,313.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,564.40 : 18,851.76 = 5,540.80 : x
  2. Step 2: Convert to fraction form
    12,564.40/18,851.76 = 5,540.80/x
  3. Step 3: Cross multiply
    12,564.40x = 18,851.76 × 5,540.80
  4. Step 4: Simplify right side
    12,564.40x = 104,453,831.81
  5. Step 5: Solve for x
    x = 104,453,831.81/12,564.40
  6. Step 6: Final answer
    x = 8,313.48

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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.