Home / 13,322.28-18,401.10-9,980.04

Finding the Fourth Proportional to 13,322.28, 18,401.10 and 9,980.04

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Solution

The fourth proportional to 13,322.28, 18,401.10 and 9,980.04 is: 13,784.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,322.28 : 18,401.10 = 9,980.04 : x
  2. Step 2: Convert to fraction form
    13,322.28/18,401.10 = 9,980.04/x
  3. Step 3: Cross multiply
    13,322.28x = 18,401.10 × 9,980.04
  4. Step 4: Simplify right side
    13,322.28x = 183,643,714.04
  5. Step 5: Solve for x
    x = 183,643,714.04/13,322.28
  6. Step 6: Final answer
    x = 13,784.71

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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.