Home / 21,307.04-31,960.96-7,270.28

Finding the Fourth Proportional to 21,307.04, 31,960.96 and 7,270.28

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Solution

The fourth proportional to 21,307.04, 31,960.96 and 7,270.28 is: 10,905.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307.04 : 31,960.96 = 7,270.28 : x
  2. Step 2: Convert to fraction form
    21,307.04/31,960.96 = 7,270.28/x
  3. Step 3: Cross multiply
    21,307.04x = 31,960.96 × 7,270.28
  4. Step 4: Simplify right side
    21,307.04x = 232,365,128.27
  5. Step 5: Solve for x
    x = 232,365,128.27/21,307.04
  6. Step 6: Final answer
    x = 10,905.56

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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.