Home / 15,279.06-21,085.02-9,309.48

Finding the Fourth Proportional to 15,279.06, 21,085.02 and 9,309.48

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Solution

The fourth proportional to 15,279.06, 21,085.02 and 9,309.48 is: 12,847.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,279.06 : 21,085.02 = 9,309.48 : x
  2. Step 2: Convert to fraction form
    15,279.06/21,085.02 = 9,309.48/x
  3. Step 3: Cross multiply
    15,279.06x = 21,085.02 × 9,309.48
  4. Step 4: Simplify right side
    15,279.06x = 196,290,571.99
  5. Step 5: Solve for x
    x = 196,290,571.99/15,279.06
  6. Step 6: Final answer
    x = 12,847.03

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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.