Home / 20,586.90-28,411.36-11,635.22

Finding the Fourth Proportional to 20,586.90, 28,411.36 and 11,635.22

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Solution

The fourth proportional to 20,586.90, 28,411.36 and 11,635.22 is: 16,057.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586.90 : 28,411.36 = 11,635.22 : x
  2. Step 2: Convert to fraction form
    20,586.90/28,411.36 = 11,635.22/x
  3. Step 3: Cross multiply
    20,586.90x = 28,411.36 × 11,635.22
  4. Step 4: Simplify right side
    20,586.90x = 330,572,424.10
  5. Step 5: Solve for x
    x = 330,572,424.10/20,586.90
  6. Step 6: Final answer
    x = 16,057.42

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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.