Home / 22,291.40-33,426.30-12,420.20

Finding the Fourth Proportional to 22,291.40, 33,426.30 and 12,420.20

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Solution

The fourth proportional to 22,291.40, 33,426.30 and 12,420.20 is: 18,624.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,291.40 : 33,426.30 = 12,420.20 : x
  2. Step 2: Convert to fraction form
    22,291.40/33,426.30 = 12,420.20/x
  3. Step 3: Cross multiply
    22,291.40x = 33,426.30 × 12,420.20
  4. Step 4: Simplify right side
    22,291.40x = 415,161,331.26
  5. Step 5: Solve for x
    x = 415,161,331.26/22,291.40
  6. Step 6: Final answer
    x = 18,624.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.