Home / 13,359.20-18,435.60-7,390.88

Finding the Fourth Proportional to 13,359.20, 18,435.60 and 7,390.88

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Solution

The fourth proportional to 13,359.20, 18,435.60 and 7,390.88 is: 10,199.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,359.20 : 18,435.60 = 7,390.88 : x
  2. Step 2: Convert to fraction form
    13,359.20/18,435.60 = 7,390.88/x
  3. Step 3: Cross multiply
    13,359.20x = 18,435.60 × 7,390.88
  4. Step 4: Simplify right side
    13,359.20x = 136,255,307.33
  5. Step 5: Solve for x
    x = 136,255,307.33/13,359.20
  6. Step 6: Final answer
    x = 10,199.36

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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.