Home / 15,765.86-23,681.58-13,305.44

Finding the Fourth Proportional to 15,765.86, 23,681.58 and 13,305.44

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Solution

The fourth proportional to 15,765.86, 23,681.58 and 13,305.44 is: 19,985.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,765.86 : 23,681.58 = 13,305.44 : x
  2. Step 2: Convert to fraction form
    15,765.86/23,681.58 = 13,305.44/x
  3. Step 3: Cross multiply
    15,765.86x = 23,681.58 × 13,305.44
  4. Step 4: Simplify right side
    15,765.86x = 315,093,841.80
  5. Step 5: Solve for x
    x = 315,093,841.80/15,765.86
  6. Step 6: Final answer
    x = 19,985.83

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1.5x scale

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.