Home / 28,508.55-39,343.08-15,933.30

Finding the Fourth Proportional to 28,508.55, 39,343.08 and 15,933.30

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Solution

The fourth proportional to 28,508.55, 39,343.08 and 15,933.30 is: 21,988.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,508.55 : 39,343.08 = 15,933.30 : x
  2. Step 2: Convert to fraction form
    28,508.55/39,343.08 = 15,933.30/x
  3. Step 3: Cross multiply
    28,508.55x = 39,343.08 × 15,933.30
  4. Step 4: Simplify right side
    28,508.55x = 626,865,096.56
  5. Step 5: Solve for x
    x = 626,865,096.56/28,508.55
  6. Step 6: Final answer
    x = 21,988.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.