Home / 21,185.84-31,758.08-10,089.56

Finding the Fourth Proportional to 21,185.84, 31,758.08 and 10,089.56

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Solution

The fourth proportional to 21,185.84, 31,758.08 and 10,089.56 is: 15,124.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.84 : 31,758.08 = 10,089.56 : x
  2. Step 2: Convert to fraction form
    21,185.84/31,758.08 = 10,089.56/x
  3. Step 3: Cross multiply
    21,185.84x = 31,758.08 × 10,089.56
  4. Step 4: Simplify right side
    21,185.84x = 320,424,844.41
  5. Step 5: Solve for x
    x = 320,424,844.41/21,185.84
  6. Step 6: Final answer
    x = 15,124.49

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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.