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Finding the Fourth Proportional to 19,159.71, 26,425.43 and 12,447.50

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Solution

The fourth proportional to 19,159.71, 26,425.43 and 12,447.50 is: 17,167.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,159.71 : 26,425.43 = 12,447.50 : x
  2. Step 2: Convert to fraction form
    19,159.71/26,425.43 = 12,447.50/x
  3. Step 3: Cross multiply
    19,159.71x = 26,425.43 × 12,447.50
  4. Step 4: Simplify right side
    19,159.71x = 328,930,616.28
  5. Step 5: Solve for x
    x = 328,930,616.28/19,159.71
  6. Step 6: Final answer
    x = 17,167.82

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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.