Home / 20,491.01-28,281.22-19,556.07

Finding the Fourth Proportional to 20,491.01, 28,281.22 and 19,556.07

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Solution

The fourth proportional to 20,491.01, 28,281.22 and 19,556.07 is: 26,990.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,491.01 : 28,281.22 = 19,556.07 : x
  2. Step 2: Convert to fraction form
    20,491.01/28,281.22 = 19,556.07/x
  3. Step 3: Cross multiply
    20,491.01x = 28,281.22 × 19,556.07
  4. Step 4: Simplify right side
    20,491.01x = 553,069,363.06
  5. Step 5: Solve for x
    x = 553,069,363.06/20,491.01
  6. Step 6: Final answer
    x = 26,990.83

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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.