Home / 20,715.93-31,057.01-9,629.59

Finding the Fourth Proportional to 20,715.93, 31,057.01 and 9,629.59

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Solution

The fourth proportional to 20,715.93, 31,057.01 and 9,629.59 is: 14,436.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,715.93 : 31,057.01 = 9,629.59 : x
  2. Step 2: Convert to fraction form
    20,715.93/31,057.01 = 9,629.59/x
  3. Step 3: Cross multiply
    20,715.93x = 31,057.01 × 9,629.59
  4. Step 4: Simplify right side
    20,715.93x = 299,066,272.93
  5. Step 5: Solve for x
    x = 299,066,272.93/20,715.93
  6. Step 6: Final answer
    x = 14,436.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.