Home / 20,742.66-31,095.27-14,081.40

Finding the Fourth Proportional to 20,742.66, 31,095.27 and 14,081.40

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Solution

The fourth proportional to 20,742.66, 31,095.27 and 14,081.40 is: 21,109.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742.66 : 31,095.27 = 14,081.40 : x
  2. Step 2: Convert to fraction form
    20,742.66/31,095.27 = 14,081.40/x
  3. Step 3: Cross multiply
    20,742.66x = 31,095.27 × 14,081.40
  4. Step 4: Simplify right side
    20,742.66x = 437,864,934.98
  5. Step 5: Solve for x
    x = 437,864,934.98/20,742.66
  6. Step 6: Final answer
    x = 21,109.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.