Home / 13,767.80-18,999.56-7,480.20

Finding the Fourth Proportional to 13,767.80, 18,999.56 and 7,480.20

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Solution

The fourth proportional to 13,767.80, 18,999.56 and 7,480.20 is: 10,322.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,767.80 : 18,999.56 = 7,480.20 : x
  2. Step 2: Convert to fraction form
    13,767.80/18,999.56 = 7,480.20/x
  3. Step 3: Cross multiply
    13,767.80x = 18,999.56 × 7,480.20
  4. Step 4: Simplify right side
    13,767.80x = 142,120,508.71
  5. Step 5: Solve for x
    x = 142,120,508.71/13,767.80
  6. Step 6: Final answer
    x = 10,322.67

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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.