Home / 20,903.58-31,331.07-10,378.44

Finding the Fourth Proportional to 20,903.58, 31,331.07 and 10,378.44

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Solution

The fourth proportional to 20,903.58, 31,331.07 and 10,378.44 is: 15,555.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,903.58 : 31,331.07 = 10,378.44 : x
  2. Step 2: Convert to fraction form
    20,903.58/31,331.07 = 10,378.44/x
  3. Step 3: Cross multiply
    20,903.58x = 31,331.07 × 10,378.44
  4. Step 4: Simplify right side
    20,903.58x = 325,167,630.13
  5. Step 5: Solve for x
    x = 325,167,630.13/20,903.58
  6. Step 6: Final answer
    x = 15,555.60

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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.