Home / 21,098.40-31,628.94-17,998.32

Finding the Fourth Proportional to 21,098.40, 31,628.94 and 17,998.32

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Solution

The fourth proportional to 21,098.40, 31,628.94 and 17,998.32 is: 26,981.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,098.40 : 31,628.94 = 17,998.32 : x
  2. Step 2: Convert to fraction form
    21,098.40/31,628.94 = 17,998.32/x
  3. Step 3: Cross multiply
    21,098.40x = 31,628.94 × 17,998.32
  4. Step 4: Simplify right side
    21,098.40x = 569,267,783.38
  5. Step 5: Solve for x
    x = 569,267,783.38/21,098.40
  6. Step 6: Final answer
    x = 26,981.56

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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.