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Finding the Fourth Proportional to 19,236, 26,545.68 and 13,656.72

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Solution

The fourth proportional to 19,236, 26,545.68 and 13,656.72 is: 18,846.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,236 : 26,545.68 = 13,656.72 : x
  2. Step 2: Convert to fraction form
    19,236/26,545.68 = 13,656.72/x
  3. Step 3: Cross multiply
    19,236x = 26,545.68 × 13,656.72
  4. Step 4: Simplify right side
    19,236x = 362,526,918.97
  5. Step 5: Solve for x
    x = 362,526,918.97/19,236
  6. Step 6: Final answer
    x = 18,846.27

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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.