Home / 28,369.34-39,143.76-16,431.97

Finding the Fourth Proportional to 28,369.34, 39,143.76 and 16,431.97

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Solution

The fourth proportional to 28,369.34, 39,143.76 and 16,431.97 is: 22,672.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,369.34 : 39,143.76 = 16,431.97 : x
  2. Step 2: Convert to fraction form
    28,369.34/39,143.76 = 16,431.97/x
  3. Step 3: Cross multiply
    28,369.34x = 39,143.76 × 16,431.97
  4. Step 4: Simplify right side
    28,369.34x = 643,208,812.13
  5. Step 5: Solve for x
    x = 643,208,812.13/28,369.34
  6. Step 6: Final answer
    x = 22,672.67

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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.