Home / 20,969.28-31,458.24-17,530.56

Finding the Fourth Proportional to 20,969.28, 31,458.24 and 17,530.56

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Solution

The fourth proportional to 20,969.28, 31,458.24 and 17,530.56 is: 26,299.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,969.28 : 31,458.24 = 17,530.56 : x
  2. Step 2: Convert to fraction form
    20,969.28/31,458.24 = 17,530.56/x
  3. Step 3: Cross multiply
    20,969.28x = 31,458.24 × 17,530.56
  4. Step 4: Simplify right side
    20,969.28x = 551,480,563.81
  5. Step 5: Solve for x
    x = 551,480,563.81/20,969.28
  6. Step 6: Final answer
    x = 26,299.45

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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.