Home / 20,607.15-28,439.76-12,951.67

Finding the Fourth Proportional to 20,607.15, 28,439.76 and 12,951.67

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Solution

The fourth proportional to 20,607.15, 28,439.76 and 12,951.67 is: 17,874.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,607.15 : 28,439.76 = 12,951.67 : x
  2. Step 2: Convert to fraction form
    20,607.15/28,439.76 = 12,951.67/x
  3. Step 3: Cross multiply
    20,607.15x = 28,439.76 × 12,951.67
  4. Step 4: Simplify right side
    20,607.15x = 368,342,344.34
  5. Step 5: Solve for x
    x = 368,342,344.34/20,607.15
  6. Step 6: Final answer
    x = 17,874.49

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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.