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Finding the Fourth Proportional to 12,862.17, 19,389.65 and 12,004.88

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Solution

The fourth proportional to 12,862.17, 19,389.65 and 12,004.88 is: 18,097.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,862.17 : 19,389.65 = 12,004.88 : x
  2. Step 2: Convert to fraction form
    12,862.17/19,389.65 = 12,004.88/x
  3. Step 3: Cross multiply
    12,862.17x = 19,389.65 × 12,004.88
  4. Step 4: Simplify right side
    12,862.17x = 232,770,264.52
  5. Step 5: Solve for x
    x = 232,770,264.52/12,862.17
  6. Step 6: Final answer
    x = 18,097.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.