Home / 18,580.40-27,873.32-8,720.68

Finding the Fourth Proportional to 18,580.40, 27,873.32 and 8,720.68

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Solution

The fourth proportional to 18,580.40, 27,873.32 and 8,720.68 is: 13,082.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,580.40 : 27,873.32 = 8,720.68 : x
  2. Step 2: Convert to fraction form
    18,580.40/27,873.32 = 8,720.68/x
  3. Step 3: Cross multiply
    18,580.40x = 27,873.32 × 8,720.68
  4. Step 4: Simplify right side
    18,580.40x = 243,074,304.26
  5. Step 5: Solve for x
    x = 243,074,304.26/18,580.40
  6. Step 6: Final answer
    x = 13,082.30

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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.