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Finding the Fourth Proportional to 18,943, 26,142.15 and 10,559.50

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Solution

The fourth proportional to 18,943, 26,142.15 and 10,559.50 is: 14,572.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,943 : 26,142.15 = 10,559.50 : x
  2. Step 2: Convert to fraction form
    18,943/26,142.15 = 10,559.50/x
  3. Step 3: Cross multiply
    18,943x = 26,142.15 × 10,559.50
  4. Step 4: Simplify right side
    18,943x = 276,048,032.93
  5. Step 5: Solve for x
    x = 276,048,032.93/18,943
  6. Step 6: Final answer
    x = 14,572.56

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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.