Home / 28,526.16-39,342.20-21,372.88

Finding the Fourth Proportional to 28,526.16, 39,342.20 and 21,372.88

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Solution

The fourth proportional to 28,526.16, 39,342.20 and 21,372.88 is: 29,476.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,526.16 : 39,342.20 = 21,372.88 : x
  2. Step 2: Convert to fraction form
    28,526.16/39,342.20 = 21,372.88/x
  3. Step 3: Cross multiply
    28,526.16x = 39,342.20 × 21,372.88
  4. Step 4: Simplify right side
    28,526.16x = 840,856,119.54
  5. Step 5: Solve for x
    x = 840,856,119.54/28,526.16
  6. Step 6: Final answer
    x = 29,476.67

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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.