Home / 19,715.64-29,577.06-11,915.16

Finding the Fourth Proportional to 19,715.64, 29,577.06 and 11,915.16

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Solution

The fourth proportional to 19,715.64, 29,577.06 and 11,915.16 is: 17,874.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,715.64 : 29,577.06 = 11,915.16 : x
  2. Step 2: Convert to fraction form
    19,715.64/29,577.06 = 11,915.16/x
  3. Step 3: Cross multiply
    19,715.64x = 29,577.06 × 11,915.16
  4. Step 4: Simplify right side
    19,715.64x = 352,415,402.23
  5. Step 5: Solve for x
    x = 352,415,402.23/19,715.64
  6. Step 6: Final answer
    x = 17,874.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.