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Finding the Fourth Proportional to 18,950.72, 26,148 and 13,657.28

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Solution

The fourth proportional to 18,950.72, 26,148 and 13,657.28 is: 18,844.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,950.72 : 26,148 = 13,657.28 : x
  2. Step 2: Convert to fraction form
    18,950.72/26,148 = 13,657.28/x
  3. Step 3: Cross multiply
    18,950.72x = 26,148 × 13,657.28
  4. Step 4: Simplify right side
    18,950.72x = 357,110,557.44
  5. Step 5: Solve for x
    x = 357,110,557.44/18,950.72
  6. Step 6: Final answer
    x = 18,844.17

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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.