Home / 13,365.54-20,041.56-7,820.55

Finding the Fourth Proportional to 13,365.54, 20,041.56 and 7,820.55

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Solution

The fourth proportional to 13,365.54, 20,041.56 and 7,820.55 is: 11,726.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,365.54 : 20,041.56 = 7,820.55 : x
  2. Step 2: Convert to fraction form
    13,365.54/20,041.56 = 7,820.55/x
  3. Step 3: Cross multiply
    13,365.54x = 20,041.56 × 7,820.55
  4. Step 4: Simplify right side
    13,365.54x = 156,736,022.06
  5. Step 5: Solve for x
    x = 156,736,022.06/13,365.54
  6. Step 6: Final answer
    x = 11,726.88

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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.