Home / 20,723.05-31,084.54-5,140.67

Finding the Fourth Proportional to 20,723.05, 31,084.54 and 5,140.67

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Solution

The fourth proportional to 20,723.05, 31,084.54 and 5,140.67 is: 7,711.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,723.05 : 31,084.54 = 5,140.67 : x
  2. Step 2: Convert to fraction form
    20,723.05/31,084.54 = 5,140.67/x
  3. Step 3: Cross multiply
    20,723.05x = 31,084.54 × 5,140.67
  4. Step 4: Simplify right side
    20,723.05x = 159,795,427.10
  5. Step 5: Solve for x
    x = 159,795,427.10/20,723.05
  6. Step 6: Final answer
    x = 7,711.00

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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.