Home / 15,085.10-20,817.40-8,371.74

Finding the Fourth Proportional to 15,085.10, 20,817.40 and 8,371.74

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Solution

The fourth proportional to 15,085.10, 20,817.40 and 8,371.74 is: 11,552.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,085.10 : 20,817.40 = 8,371.74 : x
  2. Step 2: Convert to fraction form
    15,085.10/20,817.40 = 8,371.74/x
  3. Step 3: Cross multiply
    15,085.10x = 20,817.40 × 8,371.74
  4. Step 4: Simplify right side
    15,085.10x = 174,277,860.28
  5. Step 5: Solve for x
    x = 174,277,860.28/15,085.10
  6. Step 6: Final answer
    x = 11,552.98

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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.