Home / 10,057.13-15,085.70-3,131.63

Finding the Fourth Proportional to 10,057.13, 15,085.70 and 3,131.63

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Solution

The fourth proportional to 10,057.13, 15,085.70 and 3,131.63 is: 4,697.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,057.13 : 15,085.70 = 3,131.63 : x
  2. Step 2: Convert to fraction form
    10,057.13/15,085.70 = 3,131.63/x
  3. Step 3: Cross multiply
    10,057.13x = 15,085.70 × 3,131.63
  4. Step 4: Simplify right side
    10,057.13x = 47,242,739.60
  5. Step 5: Solve for x
    x = 47,242,739.60/10,057.13
  6. Step 6: Final answer
    x = 4,697.44

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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.