Home / 13,485.74-18,610.95-7,517.45

Finding the Fourth Proportional to 13,485.74, 18,610.95 and 7,517.45

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Solution

The fourth proportional to 13,485.74, 18,610.95 and 7,517.45 is: 10,374.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,485.74 : 18,610.95 = 7,517.45 : x
  2. Step 2: Convert to fraction form
    13,485.74/18,610.95 = 7,517.45/x
  3. Step 3: Cross multiply
    13,485.74x = 18,610.95 × 7,517.45
  4. Step 4: Simplify right side
    13,485.74x = 139,906,793.02
  5. Step 5: Solve for x
    x = 139,906,793.02/13,485.74
  6. Step 6: Final answer
    x = 10,374.43

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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.