Home / 15,904.41-21,911.97-12,306.99

Finding the Fourth Proportional to 15,904.41, 21,911.97 and 12,306.99

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Solution

The fourth proportional to 15,904.41, 21,911.97 and 12,306.99 is: 16,955.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,904.41 : 21,911.97 = 12,306.99 : x
  2. Step 2: Convert to fraction form
    15,904.41/21,911.97 = 12,306.99/x
  3. Step 3: Cross multiply
    15,904.41x = 21,911.97 × 12,306.99
  4. Step 4: Simplify right side
    15,904.41x = 269,670,395.67
  5. Step 5: Solve for x
    x = 269,670,395.67/15,904.41
  6. Step 6: Final answer
    x = 16,955.70

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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.