Home / 19,876.67-27,423.81-11,915.99

Finding the Fourth Proportional to 19,876.67, 27,423.81 and 11,915.99

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Solution

The fourth proportional to 19,876.67, 27,423.81 and 11,915.99 is: 16,440.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,876.67 : 27,423.81 = 11,915.99 : x
  2. Step 2: Convert to fraction form
    19,876.67/27,423.81 = 11,915.99/x
  3. Step 3: Cross multiply
    19,876.67x = 27,423.81 × 11,915.99
  4. Step 4: Simplify right side
    19,876.67x = 326,781,845.72
  5. Step 5: Solve for x
    x = 326,781,845.72/19,876.67
  6. Step 6: Final answer
    x = 16,440.47

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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.