Home / 20,673.20-28,526.64-11,718.92

Finding the Fourth Proportional to 20,673.20, 28,526.64 and 11,718.92

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Solution

The fourth proportional to 20,673.20, 28,526.64 and 11,718.92 is: 16,170.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,673.20 : 28,526.64 = 11,718.92 : x
  2. Step 2: Convert to fraction form
    20,673.20/28,526.64 = 11,718.92/x
  3. Step 3: Cross multiply
    20,673.20x = 28,526.64 × 11,718.92
  4. Step 4: Simplify right side
    20,673.20x = 334,301,412.03
  5. Step 5: Solve for x
    x = 334,301,412.03/20,673.20
  6. Step 6: Final answer
    x = 16,170.76

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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.