Home / 20,582.40-28,402.13-11,630.89

Finding the Fourth Proportional to 20,582.40, 28,402.13 and 11,630.89

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Solution

The fourth proportional to 20,582.40, 28,402.13 and 11,630.89 is: 16,049.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.40 : 28,402.13 = 11,630.89 : x
  2. Step 2: Convert to fraction form
    20,582.40/28,402.13 = 11,630.89/x
  3. Step 3: Cross multiply
    20,582.40x = 28,402.13 × 11,630.89
  4. Step 4: Simplify right side
    20,582.40x = 330,341,849.63
  5. Step 5: Solve for x
    x = 330,341,849.63/20,582.40
  6. Step 6: Final answer
    x = 16,049.72

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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.