Home / 15,497.70-21,387.46-8,783.26

Finding the Fourth Proportional to 15,497.70, 21,387.46 and 8,783.26

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Solution

The fourth proportional to 15,497.70, 21,387.46 and 8,783.26 is: 12,121.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,497.70 : 21,387.46 = 8,783.26 : x
  2. Step 2: Convert to fraction form
    15,497.70/21,387.46 = 8,783.26/x
  3. Step 3: Cross multiply
    15,497.70x = 21,387.46 × 8,783.26
  4. Step 4: Simplify right side
    15,497.70x = 187,851,621.92
  5. Step 5: Solve for x
    x = 187,851,621.92/15,497.70
  6. Step 6: Final answer
    x = 12,121.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.