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Finding the Fourth Proportional to 35,543.96, 53,348.18 and 18,918

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Solution

The fourth proportional to 35,543.96, 53,348.18 and 18,918 is: 28,394.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,543.96 : 53,348.18 = 18,918 : x
  2. Step 2: Convert to fraction form
    35,543.96/53,348.18 = 18,918/x
  3. Step 3: Cross multiply
    35,543.96x = 53,348.18 × 18,918
  4. Step 4: Simplify right side
    35,543.96x = 1,009,240,869.24
  5. Step 5: Solve for x
    x = 1,009,240,869.24/35,543.96
  6. Step 6: Final answer
    x = 28,394.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.