Home / 20,816.04-28,726.08-11,863.92

Finding the Fourth Proportional to 20,816.04, 28,726.08 and 11,863.92

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Solution

The fourth proportional to 20,816.04, 28,726.08 and 11,863.92 is: 16,372.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,816.04 : 28,726.08 = 11,863.92 : x
  2. Step 2: Convert to fraction form
    20,816.04/28,726.08 = 11,863.92/x
  3. Step 3: Cross multiply
    20,816.04x = 28,726.08 × 11,863.92
  4. Step 4: Simplify right side
    20,816.04x = 340,803,915.03
  5. Step 5: Solve for x
    x = 340,803,915.03/20,816.04
  6. Step 6: Final answer
    x = 16,372.18

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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.