Home / 15,915.14-21,955.83-10,604.78

Finding the Fourth Proportional to 15,915.14, 21,955.83 and 10,604.78

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Solution

The fourth proportional to 15,915.14, 21,955.83 and 10,604.78 is: 14,629.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,915.14 : 21,955.83 = 10,604.78 : x
  2. Step 2: Convert to fraction form
    15,915.14/21,955.83 = 10,604.78/x
  3. Step 3: Cross multiply
    15,915.14x = 21,955.83 × 10,604.78
  4. Step 4: Simplify right side
    15,915.14x = 232,836,746.87
  5. Step 5: Solve for x
    x = 232,836,746.87/15,915.14
  6. Step 6: Final answer
    x = 14,629.89

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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.