Home / 31,916.40-44,046.72-21,299.28

Finding the Fourth Proportional to 31,916.40, 44,046.72 and 21,299.28

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Solution

The fourth proportional to 31,916.40, 44,046.72 and 21,299.28 is: 29,394.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,916.40 : 44,046.72 = 21,299.28 : x
  2. Step 2: Convert to fraction form
    31,916.40/44,046.72 = 21,299.28/x
  3. Step 3: Cross multiply
    31,916.40x = 44,046.72 × 21,299.28
  4. Step 4: Simplify right side
    31,916.40x = 938,163,422.36
  5. Step 5: Solve for x
    x = 938,163,422.36/31,916.40
  6. Step 6: Final answer
    x = 29,394.40

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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.