Home / 15,085.13-20,816.48-8,370.34

Finding the Fourth Proportional to 15,085.13, 20,816.48 and 8,370.34

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Solution

The fourth proportional to 15,085.13, 20,816.48 and 8,370.34 is: 11,550.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,085.13 : 20,816.48 = 8,370.34 : x
  2. Step 2: Convert to fraction form
    15,085.13/20,816.48 = 8,370.34/x
  3. Step 3: Cross multiply
    15,085.13x = 20,816.48 × 8,370.34
  4. Step 4: Simplify right side
    15,085.13x = 174,240,984.09
  5. Step 5: Solve for x
    x = 174,240,984.09/15,085.13
  6. Step 6: Final answer
    x = 11,550.51

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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.