Home / 28,381.40-39,164.61-16,442.67

Finding the Fourth Proportional to 28,381.40, 39,164.61 and 16,442.67

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Solution

The fourth proportional to 28,381.40, 39,164.61 and 16,442.67 is: 22,689.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,381.40 : 39,164.61 = 16,442.67 : x
  2. Step 2: Convert to fraction form
    28,381.40/39,164.61 = 16,442.67/x
  3. Step 3: Cross multiply
    28,381.40x = 39,164.61 × 16,442.67
  4. Step 4: Simplify right side
    28,381.40x = 643,970,757.91
  5. Step 5: Solve for x
    x = 643,970,757.91/28,381.40
  6. Step 6: Final answer
    x = 22,689.89

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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.