Home / 12,615.24-18,923.10-5,220.60

Finding the Fourth Proportional to 12,615.24, 18,923.10 and 5,220.60

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Solution

The fourth proportional to 12,615.24, 18,923.10 and 5,220.60 is: 7,831.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,615.24 : 18,923.10 = 5,220.60 : x
  2. Step 2: Convert to fraction form
    12,615.24/18,923.10 = 5,220.60/x
  3. Step 3: Cross multiply
    12,615.24x = 18,923.10 × 5,220.60
  4. Step 4: Simplify right side
    12,615.24x = 98,789,935.86
  5. Step 5: Solve for x
    x = 98,789,935.86/12,615.24
  6. Step 6: Final answer
    x = 7,831.00

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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.