Home / 20,409.48-28,165.23-11,334.87

Finding the Fourth Proportional to 20,409.48, 28,165.23 and 11,334.87

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Solution

The fourth proportional to 20,409.48, 28,165.23 and 11,334.87 is: 15,642.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,409.48 : 28,165.23 = 11,334.87 : x
  2. Step 2: Convert to fraction form
    20,409.48/28,165.23 = 11,334.87/x
  3. Step 3: Cross multiply
    20,409.48x = 28,165.23 × 11,334.87
  4. Step 4: Simplify right side
    20,409.48x = 319,249,220.57
  5. Step 5: Solve for x
    x = 319,249,220.57/20,409.48
  6. Step 6: Final answer
    x = 15,642.20

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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.