Home / 20,679.84-31,017.40-5,688.56

Finding the Fourth Proportional to 20,679.84, 31,017.40 and 5,688.56

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Solution

The fourth proportional to 20,679.84, 31,017.40 and 5,688.56 is: 8,532.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.84 : 31,017.40 = 5,688.56 : x
  2. Step 2: Convert to fraction form
    20,679.84/31,017.40 = 5,688.56/x
  3. Step 3: Cross multiply
    20,679.84x = 31,017.40 × 5,688.56
  4. Step 4: Simplify right side
    20,679.84x = 176,444,404.27
  5. Step 5: Solve for x
    x = 176,444,404.27/20,679.84
  6. Step 6: Final answer
    x = 8,532.19

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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.