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Finding the Fourth Proportional to 21,482.16, 29,578.04 and 19,513.88

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Solution

The fourth proportional to 21,482.16, 29,578.04 and 19,513.88 is: 26,867.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,482.16 : 29,578.04 = 19,513.88 : x
  2. Step 2: Convert to fraction form
    21,482.16/29,578.04 = 19,513.88/x
  3. Step 3: Cross multiply
    21,482.16x = 29,578.04 × 19,513.88
  4. Step 4: Simplify right side
    21,482.16x = 577,182,323.20
  5. Step 5: Solve for x
    x = 577,182,323.20/21,482.16
  6. Step 6: Final answer
    x = 26,867.98

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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.