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Finding the Fourth Proportional to 13,051.23, 18,010.44 and 7,385.87

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Solution

The fourth proportional to 13,051.23, 18,010.44 and 7,385.87 is: 10,192.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,051.23 : 18,010.44 = 7,385.87 : x
  2. Step 2: Convert to fraction form
    13,051.23/18,010.44 = 7,385.87/x
  3. Step 3: Cross multiply
    13,051.23x = 18,010.44 × 7,385.87
  4. Step 4: Simplify right side
    13,051.23x = 133,022,718.27
  5. Step 5: Solve for x
    x = 133,022,718.27/13,051.23
  6. Step 6: Final answer
    x = 10,192.35

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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.