Home / 21,040.56-31,560.57-7,001.64

Finding the Fourth Proportional to 21,040.56, 31,560.57 and 7,001.64

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Solution

The fourth proportional to 21,040.56, 31,560.57 and 7,001.64 is: 10,502.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,040.56 : 31,560.57 = 7,001.64 : x
  2. Step 2: Convert to fraction form
    21,040.56/31,560.57 = 7,001.64/x
  3. Step 3: Cross multiply
    21,040.56x = 31,560.57 × 7,001.64
  4. Step 4: Simplify right side
    21,040.56x = 220,975,749.33
  5. Step 5: Solve for x
    x = 220,975,749.33/21,040.56
  6. Step 6: Final answer
    x = 10,502.37

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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.