Home / 20,322.64-28,044.60-11,370.30

Finding the Fourth Proportional to 20,322.64, 28,044.60 and 11,370.30

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Solution

The fourth proportional to 20,322.64, 28,044.60 and 11,370.30 is: 15,690.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,322.64 : 28,044.60 = 11,370.30 : x
  2. Step 2: Convert to fraction form
    20,322.64/28,044.60 = 11,370.30/x
  3. Step 3: Cross multiply
    20,322.64x = 28,044.60 × 11,370.30
  4. Step 4: Simplify right side
    20,322.64x = 318,875,515.38
  5. Step 5: Solve for x
    x = 318,875,515.38/20,322.64
  6. Step 6: Final answer
    x = 15,690.65

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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.