Home / 21,098.84-31,663.82-10,005.55

Finding the Fourth Proportional to 21,098.84, 31,663.82 and 10,005.55

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Solution

The fourth proportional to 21,098.84, 31,663.82 and 10,005.55 is: 15,015.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,098.84 : 31,663.82 = 10,005.55 : x
  2. Step 2: Convert to fraction form
    21,098.84/31,663.82 = 10,005.55/x
  3. Step 3: Cross multiply
    21,098.84x = 31,663.82 × 10,005.55
  4. Step 4: Simplify right side
    21,098.84x = 316,813,880.06
  5. Step 5: Solve for x
    x = 316,813,880.06/21,098.84
  6. Step 6: Final answer
    x = 15,015.70

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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.