Home / 35,445.20-53,167.80-10,821.20

Finding the Fourth Proportional to 35,445.20, 53,167.80 and 10,821.20

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Solution

The fourth proportional to 35,445.20, 53,167.80 and 10,821.20 is: 16,231.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,445.20 : 53,167.80 = 10,821.20 : x
  2. Step 2: Convert to fraction form
    35,445.20/53,167.80 = 10,821.20/x
  3. Step 3: Cross multiply
    35,445.20x = 53,167.80 × 10,821.20
  4. Step 4: Simplify right side
    35,445.20x = 575,339,397.36
  5. Step 5: Solve for x
    x = 575,339,397.36/35,445.20
  6. Step 6: Final answer
    x = 16,231.80

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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.