Home / 20,322.19-28,045.71-11,369.16

Finding the Fourth Proportional to 20,322.19, 28,045.71 and 11,369.16

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Solution

The fourth proportional to 20,322.19, 28,045.71 and 11,369.16 is: 15,690.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,322.19 : 28,045.71 = 11,369.16 : x
  2. Step 2: Convert to fraction form
    20,322.19/28,045.71 = 11,369.16/x
  3. Step 3: Cross multiply
    20,322.19x = 28,045.71 × 11,369.16
  4. Step 4: Simplify right side
    20,322.19x = 318,856,079.98
  5. Step 5: Solve for x
    x = 318,856,079.98/20,322.19
  6. Step 6: Final answer
    x = 15,690.05

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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.