Home / 15,130.98-20,882.46-8,671.22

Finding the Fourth Proportional to 15,130.98, 20,882.46 and 8,671.22

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Solution

The fourth proportional to 15,130.98, 20,882.46 and 8,671.22 is: 11,967.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,130.98 : 20,882.46 = 8,671.22 : x
  2. Step 2: Convert to fraction form
    15,130.98/20,882.46 = 8,671.22/x
  3. Step 3: Cross multiply
    15,130.98x = 20,882.46 × 8,671.22
  4. Step 4: Simplify right side
    15,130.98x = 181,076,404.80
  5. Step 5: Solve for x
    x = 181,076,404.80/15,130.98
  6. Step 6: Final answer
    x = 11,967.26

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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.