Home / 20,827.08-28,742.10-11,395.66

Finding the Fourth Proportional to 20,827.08, 28,742.10 and 11,395.66

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Solution

The fourth proportional to 20,827.08, 28,742.10 and 11,395.66 is: 15,726.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.08 : 28,742.10 = 11,395.66 : x
  2. Step 2: Convert to fraction form
    20,827.08/28,742.10 = 11,395.66/x
  3. Step 3: Cross multiply
    20,827.08x = 28,742.10 × 11,395.66
  4. Step 4: Simplify right side
    20,827.08x = 327,535,199.29
  5. Step 5: Solve for x
    x = 327,535,199.29/20,827.08
  6. Step 6: Final answer
    x = 15,726.41

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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.