Home / 28,222.80-42,330.27-19,763.67

Finding the Fourth Proportional to 28,222.80, 42,330.27 and 19,763.67

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Solution

The fourth proportional to 28,222.80, 42,330.27 and 19,763.67 is: 29,642.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,222.80 : 42,330.27 = 19,763.67 : x
  2. Step 2: Convert to fraction form
    28,222.80/42,330.27 = 19,763.67/x
  3. Step 3: Cross multiply
    28,222.80x = 42,330.27 × 19,763.67
  4. Step 4: Simplify right side
    28,222.80x = 836,601,487.29
  5. Step 5: Solve for x
    x = 836,601,487.29/28,222.80
  6. Step 6: Final answer
    x = 29,642.75

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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.