Home / 28,717.92-39,634.29-16,142.67

Finding the Fourth Proportional to 28,717.92, 39,634.29 and 16,142.67

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Solution

The fourth proportional to 28,717.92, 39,634.29 and 16,142.67 is: 22,278.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,717.92 : 39,634.29 = 16,142.67 : x
  2. Step 2: Convert to fraction form
    28,717.92/39,634.29 = 16,142.67/x
  3. Step 3: Cross multiply
    28,717.92x = 39,634.29 × 16,142.67
  4. Step 4: Simplify right side
    28,717.92x = 639,803,264.15
  5. Step 5: Solve for x
    x = 639,803,264.15/28,717.92
  6. Step 6: Final answer
    x = 22,278.89

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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.