Home / 20,895.36-31,343.24-5,312.98

Finding the Fourth Proportional to 20,895.36, 31,343.24 and 5,312.98

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Solution

The fourth proportional to 20,895.36, 31,343.24 and 5,312.98 is: 7,969.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,895.36 : 31,343.24 = 5,312.98 : x
  2. Step 2: Convert to fraction form
    20,895.36/31,343.24 = 5,312.98/x
  3. Step 3: Cross multiply
    20,895.36x = 31,343.24 × 5,312.98
  4. Step 4: Simplify right side
    20,895.36x = 166,526,007.26
  5. Step 5: Solve for x
    x = 166,526,007.26/20,895.36
  6. Step 6: Final answer
    x = 7,969.52

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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.