Home / 16,420.56-22,656.51-12,181.41

Finding the Fourth Proportional to 16,420.56, 22,656.51 and 12,181.41

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Solution

The fourth proportional to 16,420.56, 22,656.51 and 12,181.41 is: 16,807.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,420.56 : 22,656.51 = 12,181.41 : x
  2. Step 2: Convert to fraction form
    16,420.56/22,656.51 = 12,181.41/x
  3. Step 3: Cross multiply
    16,420.56x = 22,656.51 × 12,181.41
  4. Step 4: Simplify right side
    16,420.56x = 275,988,237.48
  5. Step 5: Solve for x
    x = 275,988,237.48/16,420.56
  6. Step 6: Final answer
    x = 16,807.48

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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.