Home / 20,895.86-31,343.99-5,313.48

Finding the Fourth Proportional to 20,895.86, 31,343.99 and 5,313.48

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Solution

The fourth proportional to 20,895.86, 31,343.99 and 5,313.48 is: 7,970.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,895.86 : 31,343.99 = 5,313.48 : x
  2. Step 2: Convert to fraction form
    20,895.86/31,343.99 = 5,313.48/x
  3. Step 3: Cross multiply
    20,895.86x = 31,343.99 × 5,313.48
  4. Step 4: Simplify right side
    20,895.86x = 166,545,637.42
  5. Step 5: Solve for x
    x = 166,545,637.42/20,895.86
  6. Step 6: Final answer
    x = 7,970.27

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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.