Home / 15,915.64-21,956.52-10,605.28

Finding the Fourth Proportional to 15,915.64, 21,956.52 and 10,605.28

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Solution

The fourth proportional to 15,915.64, 21,956.52 and 10,605.28 is: 14,630.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,915.64 : 21,956.52 = 10,605.28 : x
  2. Step 2: Convert to fraction form
    15,915.64/21,956.52 = 10,605.28/x
  3. Step 3: Cross multiply
    15,915.64x = 21,956.52 × 10,605.28
  4. Step 4: Simplify right side
    15,915.64x = 232,855,042.43
  5. Step 5: Solve for x
    x = 232,855,042.43/15,915.64
  6. Step 6: Final answer
    x = 14,630.58

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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.