Home / 15,218.07-20,999.38-10,442.13

Finding the Fourth Proportional to 15,218.07, 20,999.38 and 10,442.13

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Solution

The fourth proportional to 15,218.07, 20,999.38 and 10,442.13 is: 14,409.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,218.07 : 20,999.38 = 10,442.13 : x
  2. Step 2: Convert to fraction form
    15,218.07/20,999.38 = 10,442.13/x
  3. Step 3: Cross multiply
    15,218.07x = 20,999.38 × 10,442.13
  4. Step 4: Simplify right side
    15,218.07x = 219,278,255.88
  5. Step 5: Solve for x
    x = 219,278,255.88/15,218.07
  6. Step 6: Final answer
    x = 14,409.07

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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.