Home / 20,582.83-28,404.34-11,151.40

Finding the Fourth Proportional to 20,582.83, 28,404.34 and 11,151.40

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Solution

The fourth proportional to 20,582.83, 28,404.34 and 11,151.40 is: 15,388.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.83 : 28,404.34 = 11,151.40 : x
  2. Step 2: Convert to fraction form
    20,582.83/28,404.34 = 11,151.40/x
  3. Step 3: Cross multiply
    20,582.83x = 28,404.34 × 11,151.40
  4. Step 4: Simplify right side
    20,582.83x = 316,748,157.08
  5. Step 5: Solve for x
    x = 316,748,157.08/20,582.83
  6. Step 6: Final answer
    x = 15,388.95

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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.