Home / 20,581.81-28,423.09-17,580.16

Finding the Fourth Proportional to 20,581.81, 28,423.09 and 17,580.16

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Solution

The fourth proportional to 20,581.81, 28,423.09 and 17,580.16 is: 24,277.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.81 : 28,423.09 = 17,580.16 : x
  2. Step 2: Convert to fraction form
    20,581.81/28,423.09 = 17,580.16/x
  3. Step 3: Cross multiply
    20,581.81x = 28,423.09 × 17,580.16
  4. Step 4: Simplify right side
    20,581.81x = 499,682,268.63
  5. Step 5: Solve for x
    x = 499,682,268.63/20,581.81
  6. Step 6: Final answer
    x = 24,277.85

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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.