Home / 21,132.45-31,698.99-10,040.28

Finding the Fourth Proportional to 21,132.45, 31,698.99 and 10,040.28

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Solution

The fourth proportional to 21,132.45, 31,698.99 and 10,040.28 is: 15,060.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,132.45 : 31,698.99 = 10,040.28 : x
  2. Step 2: Convert to fraction form
    21,132.45/31,698.99 = 10,040.28/x
  3. Step 3: Cross multiply
    21,132.45x = 31,698.99 × 10,040.28
  4. Step 4: Simplify right side
    21,132.45x = 318,266,735.32
  5. Step 5: Solve for x
    x = 318,266,735.32/21,132.45
  6. Step 6: Final answer
    x = 15,060.57

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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.