Home / 22,921.40-31,633.68-13,969.70

Finding the Fourth Proportional to 22,921.40, 31,633.68 and 13,969.70

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Solution

The fourth proportional to 22,921.40, 31,633.68 and 13,969.70 is: 19,279.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,921.40 : 31,633.68 = 13,969.70 : x
  2. Step 2: Convert to fraction form
    22,921.40/31,633.68 = 13,969.70/x
  3. Step 3: Cross multiply
    22,921.40x = 31,633.68 × 13,969.70
  4. Step 4: Simplify right side
    22,921.40x = 441,913,019.50
  5. Step 5: Solve for x
    x = 441,913,019.50/22,921.40
  6. Step 6: Final answer
    x = 19,279.50

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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.