Home / 13,740.81-20,610.06-4,380.45

Finding the Fourth Proportional to 13,740.81, 20,610.06 and 4,380.45

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Solution

The fourth proportional to 13,740.81, 20,610.06 and 4,380.45 is: 6,570.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,740.81 : 20,610.06 = 4,380.45 : x
  2. Step 2: Convert to fraction form
    13,740.81/20,610.06 = 4,380.45/x
  3. Step 3: Cross multiply
    13,740.81x = 20,610.06 × 4,380.45
  4. Step 4: Simplify right side
    13,740.81x = 90,281,337.33
  5. Step 5: Solve for x
    x = 90,281,337.33/13,740.81
  6. Step 6: Final answer
    x = 6,570.31

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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.