Home / 20,893.28-31,339.93-10,370.57

Finding the Fourth Proportional to 20,893.28, 31,339.93 and 10,370.57

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Solution

The fourth proportional to 20,893.28, 31,339.93 and 10,370.57 is: 15,555.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,893.28 : 31,339.93 = 10,370.57 : x
  2. Step 2: Convert to fraction form
    20,893.28/31,339.93 = 10,370.57/x
  3. Step 3: Cross multiply
    20,893.28x = 31,339.93 × 10,370.57
  4. Step 4: Simplify right side
    20,893.28x = 325,012,937.86
  5. Step 5: Solve for x
    x = 325,012,937.86/20,893.28
  6. Step 6: Final answer
    x = 15,555.86

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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.