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Finding the Fourth Proportional to 19,385.51, 26,751.90 and 10,887.63

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Solution

The fourth proportional to 19,385.51, 26,751.90 and 10,887.63 is: 15,024.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,385.51 : 26,751.90 = 10,887.63 : x
  2. Step 2: Convert to fraction form
    19,385.51/26,751.90 = 10,887.63/x
  3. Step 3: Cross multiply
    19,385.51x = 26,751.90 × 10,887.63
  4. Step 4: Simplify right side
    19,385.51x = 291,264,729.51
  5. Step 5: Solve for x
    x = 291,264,729.51/19,385.51
  6. Step 6: Final answer
    x = 15,024.87

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.