Home / 20,748.60-28,632.70-12,135.62

Finding the Fourth Proportional to 20,748.60, 28,632.70 and 12,135.62

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Solution

The fourth proportional to 20,748.60, 28,632.70 and 12,135.62 is: 16,746.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.60 : 28,632.70 = 12,135.62 : x
  2. Step 2: Convert to fraction form
    20,748.60/28,632.70 = 12,135.62/x
  3. Step 3: Cross multiply
    20,748.60x = 28,632.70 × 12,135.62
  4. Step 4: Simplify right side
    20,748.60x = 347,475,566.77
  5. Step 5: Solve for x
    x = 347,475,566.77/20,748.60
  6. Step 6: Final answer
    x = 16,746.94

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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.