Home / 20,746.16-31,077.80-14,156

Finding the Fourth Proportional to 20,746.16, 31,077.80 and 14,156

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Solution

The fourth proportional to 20,746.16, 31,077.80 and 14,156 is: 21,205.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.16 : 31,077.80 = 14,156 : x
  2. Step 2: Convert to fraction form
    20,746.16/31,077.80 = 14,156/x
  3. Step 3: Cross multiply
    20,746.16x = 31,077.80 × 14,156
  4. Step 4: Simplify right side
    20,746.16x = 439,937,336.80
  5. Step 5: Solve for x
    x = 439,937,336.80/20,746.16
  6. Step 6: Final answer
    x = 21,205.72

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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.