Home / 13,021.55-17,969.40-7,356.88

Finding the Fourth Proportional to 13,021.55, 17,969.40 and 7,356.88

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Solution

The fourth proportional to 13,021.55, 17,969.40 and 7,356.88 is: 10,152.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,021.55 : 17,969.40 = 7,356.88 : x
  2. Step 2: Convert to fraction form
    13,021.55/17,969.40 = 7,356.88/x
  3. Step 3: Cross multiply
    13,021.55x = 17,969.40 × 7,356.88
  4. Step 4: Simplify right side
    13,021.55x = 132,198,719.47
  5. Step 5: Solve for x
    x = 132,198,719.47/13,021.55
  6. Step 6: Final answer
    x = 10,152.30

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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.