Home / 28,077.66-38,742.76-16,138.77

Finding the Fourth Proportional to 28,077.66, 38,742.76 and 16,138.77

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Solution

The fourth proportional to 28,077.66, 38,742.76 and 16,138.77 is: 22,268.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,077.66 : 38,742.76 = 16,138.77 : x
  2. Step 2: Convert to fraction form
    28,077.66/38,742.76 = 16,138.77/x
  3. Step 3: Cross multiply
    28,077.66x = 38,742.76 × 16,138.77
  4. Step 4: Simplify right side
    28,077.66x = 625,260,492.81
  5. Step 5: Solve for x
    x = 625,260,492.81/28,077.66
  6. Step 6: Final answer
    x = 22,268.97

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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.