Home / 20,838.76-31,216.26-9,730.12

Finding the Fourth Proportional to 20,838.76, 31,216.26 and 9,730.12

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Solution

The fourth proportional to 20,838.76, 31,216.26 and 9,730.12 is: 14,575.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,838.76 : 31,216.26 = 9,730.12 : x
  2. Step 2: Convert to fraction form
    20,838.76/31,216.26 = 9,730.12/x
  3. Step 3: Cross multiply
    20,838.76x = 31,216.26 × 9,730.12
  4. Step 4: Simplify right side
    20,838.76x = 303,737,955.75
  5. Step 5: Solve for x
    x = 303,737,955.75/20,838.76
  6. Step 6: Final answer
    x = 14,575.63

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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.