Home / 19,915.64-27,479.18-11,527.28

Finding the Fourth Proportional to 19,915.64, 27,479.18 and 11,527.28

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Solution

The fourth proportional to 19,915.64, 27,479.18 and 11,527.28 is: 15,905.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,915.64 : 27,479.18 = 11,527.28 : x
  2. Step 2: Convert to fraction form
    19,915.64/27,479.18 = 11,527.28/x
  3. Step 3: Cross multiply
    19,915.64x = 27,479.18 × 11,527.28
  4. Step 4: Simplify right side
    19,915.64x = 316,760,202.03
  5. Step 5: Solve for x
    x = 316,760,202.03/19,915.64
  6. Step 6: Final answer
    x = 15,905.10

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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.