Home / 20,873.40-31,313.55-10,343.93

Finding the Fourth Proportional to 20,873.40, 31,313.55 and 10,343.93

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Solution

The fourth proportional to 20,873.40, 31,313.55 and 10,343.93 is: 15,517.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,873.40 : 31,313.55 = 10,343.93 : x
  2. Step 2: Convert to fraction form
    20,873.40/31,313.55 = 10,343.93/x
  3. Step 3: Cross multiply
    20,873.40x = 31,313.55 × 10,343.93
  4. Step 4: Simplify right side
    20,873.40x = 323,905,012.68
  5. Step 5: Solve for x
    x = 323,905,012.68/20,873.40
  6. Step 6: Final answer
    x = 15,517.60

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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.