Home / 15,313.45-21,131.26-8,598.55

Finding the Fourth Proportional to 15,313.45, 21,131.26 and 8,598.55

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Solution

The fourth proportional to 15,313.45, 21,131.26 and 8,598.55 is: 11,865.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,313.45 : 21,131.26 = 8,598.55 : x
  2. Step 2: Convert to fraction form
    15,313.45/21,131.26 = 8,598.55/x
  3. Step 3: Cross multiply
    15,313.45x = 21,131.26 × 8,598.55
  4. Step 4: Simplify right side
    15,313.45x = 181,698,195.67
  5. Step 5: Solve for x
    x = 181,698,195.67/15,313.45
  6. Step 6: Final answer
    x = 11,865.27

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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.