Home / 20,582.76-28,404.36-11,151.39

Finding the Fourth Proportional to 20,582.76, 28,404.36 and 11,151.39

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Solution

The fourth proportional to 20,582.76, 28,404.36 and 11,151.39 is: 15,389.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.76 : 28,404.36 = 11,151.39 : x
  2. Step 2: Convert to fraction form
    20,582.76/28,404.36 = 11,151.39/x
  3. Step 3: Cross multiply
    20,582.76x = 28,404.36 × 11,151.39
  4. Step 4: Simplify right side
    20,582.76x = 316,748,096.06
  5. Step 5: Solve for x
    x = 316,748,096.06/20,582.76
  6. Step 6: Final answer
    x = 15,389.00

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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.