Home / 28,715.06-42,991.68-21,672.67

Finding the Fourth Proportional to 28,715.06, 42,991.68 and 21,672.67

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Solution

The fourth proportional to 28,715.06, 42,991.68 and 21,672.67 is: 32,447.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,715.06 : 42,991.68 = 21,672.67 : x
  2. Step 2: Convert to fraction form
    28,715.06/42,991.68 = 21,672.67/x
  3. Step 3: Cross multiply
    28,715.06x = 42,991.68 × 21,672.67
  4. Step 4: Simplify right side
    28,715.06x = 931,744,493.39
  5. Step 5: Solve for x
    x = 931,744,493.39/28,715.06
  6. Step 6: Final answer
    x = 32,447.94

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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.