Home / 15,322.56-21,153.20-10,313.12

Finding the Fourth Proportional to 15,322.56, 21,153.20 and 10,313.12

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Solution

The fourth proportional to 15,322.56, 21,153.20 and 10,313.12 is: 14,237.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,322.56 : 21,153.20 = 10,313.12 : x
  2. Step 2: Convert to fraction form
    15,322.56/21,153.20 = 10,313.12/x
  3. Step 3: Cross multiply
    15,322.56x = 21,153.20 × 10,313.12
  4. Step 4: Simplify right side
    15,322.56x = 218,155,489.98
  5. Step 5: Solve for x
    x = 218,155,489.98/15,322.56
  6. Step 6: Final answer
    x = 14,237.54

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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.