Home / 20,494.59-28,283.91-11,421.36

Finding the Fourth Proportional to 20,494.59, 28,283.91 and 11,421.36

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Solution

The fourth proportional to 20,494.59, 28,283.91 and 11,421.36 is: 15,762.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,494.59 : 28,283.91 = 11,421.36 : x
  2. Step 2: Convert to fraction form
    20,494.59/28,283.91 = 11,421.36/x
  3. Step 3: Cross multiply
    20,494.59x = 28,283.91 × 11,421.36
  4. Step 4: Simplify right side
    20,494.59x = 323,040,718.32
  5. Step 5: Solve for x
    x = 323,040,718.32/20,494.59
  6. Step 6: Final answer
    x = 15,762.24

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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.