Home / 15,991.80-23,985.54-4,305.72

Finding the Fourth Proportional to 15,991.80, 23,985.54 and 4,305.72

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Solution

The fourth proportional to 15,991.80, 23,985.54 and 4,305.72 is: 6,458.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,991.80 : 23,985.54 = 4,305.72 : x
  2. Step 2: Convert to fraction form
    15,991.80/23,985.54 = 4,305.72/x
  3. Step 3: Cross multiply
    15,991.80x = 23,985.54 × 4,305.72
  4. Step 4: Simplify right side
    15,991.80x = 103,275,019.29
  5. Step 5: Solve for x
    x = 103,275,019.29/15,991.80
  6. Step 6: Final answer
    x = 6,458.00

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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.