Home / 21,014.26-31,528.59-7,172.98

Finding the Fourth Proportional to 21,014.26, 31,528.59 and 7,172.98

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Solution

The fourth proportional to 21,014.26, 31,528.59 and 7,172.98 is: 10,761.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,014.26 : 31,528.59 = 7,172.98 : x
  2. Step 2: Convert to fraction form
    21,014.26/31,528.59 = 7,172.98/x
  3. Step 3: Cross multiply
    21,014.26x = 31,528.59 × 7,172.98
  4. Step 4: Simplify right side
    21,014.26x = 226,153,945.50
  5. Step 5: Solve for x
    x = 226,153,945.50/21,014.26
  6. Step 6: Final answer
    x = 10,761.93

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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.