Home / 20,512.86-28,307.30-12,013.93

Finding the Fourth Proportional to 20,512.86, 28,307.30 and 12,013.93

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Solution

The fourth proportional to 20,512.86, 28,307.30 and 12,013.93 is: 16,578.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.86 : 28,307.30 = 12,013.93 : x
  2. Step 2: Convert to fraction form
    20,512.86/28,307.30 = 12,013.93/x
  3. Step 3: Cross multiply
    20,512.86x = 28,307.30 × 12,013.93
  4. Step 4: Simplify right side
    20,512.86x = 340,081,920.69
  5. Step 5: Solve for x
    x = 340,081,920.69/20,512.86
  6. Step 6: Final answer
    x = 16,578.96

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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.