Home / 15,672.80-23,509.56-3,986.12

Finding the Fourth Proportional to 15,672.80, 23,509.56 and 3,986.12

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Solution

The fourth proportional to 15,672.80, 23,509.56 and 3,986.12 is: 5,979.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,672.80 : 23,509.56 = 3,986.12 : x
  2. Step 2: Convert to fraction form
    15,672.80/23,509.56 = 3,986.12/x
  3. Step 3: Cross multiply
    15,672.80x = 23,509.56 × 3,986.12
  4. Step 4: Simplify right side
    15,672.80x = 93,711,927.31
  5. Step 5: Solve for x
    x = 93,711,927.31/15,672.80
  6. Step 6: Final answer
    x = 5,979.27

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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.