Home / 22,403.40-30,914.88-12,972.56

Finding the Fourth Proportional to 22,403.40, 30,914.88 and 12,972.56

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Solution

The fourth proportional to 22,403.40, 30,914.88 and 12,972.56 is: 17,901.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,403.40 : 30,914.88 = 12,972.56 : x
  2. Step 2: Convert to fraction form
    22,403.40/30,914.88 = 12,972.56/x
  3. Step 3: Cross multiply
    22,403.40x = 30,914.88 × 12,972.56
  4. Step 4: Simplify right side
    22,403.40x = 401,045,135.69
  5. Step 5: Solve for x
    x = 401,045,135.69/22,403.40
  6. Step 6: Final answer
    x = 17,901.08

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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.