Home / 15,677.42-23,515.65-3,990.60

Finding the Fourth Proportional to 15,677.42, 23,515.65 and 3,990.60

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Solution

The fourth proportional to 15,677.42, 23,515.65 and 3,990.60 is: 5,985.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,677.42 : 23,515.65 = 3,990.60 : x
  2. Step 2: Convert to fraction form
    15,677.42/23,515.65 = 3,990.60/x
  3. Step 3: Cross multiply
    15,677.42x = 23,515.65 × 3,990.60
  4. Step 4: Simplify right side
    15,677.42x = 93,841,552.89
  5. Step 5: Solve for x
    x = 93,841,552.89/15,677.42
  6. Step 6: Final answer
    x = 5,985.78

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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.