Home / 20,715.55-31,073.30-5,133.17

Finding the Fourth Proportional to 20,715.55, 31,073.30 and 5,133.17

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Solution

The fourth proportional to 20,715.55, 31,073.30 and 5,133.17 is: 7,699.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,715.55 : 31,073.30 = 5,133.17 : x
  2. Step 2: Convert to fraction form
    20,715.55/31,073.30 = 5,133.17/x
  3. Step 3: Cross multiply
    20,715.55x = 31,073.30 × 5,133.17
  4. Step 4: Simplify right side
    20,715.55x = 159,504,631.50
  5. Step 5: Solve for x
    x = 159,504,631.50/20,715.55
  6. Step 6: Final answer
    x = 7,699.75

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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.