Home / 21,004.40-31,504.08-5,423.24

Finding the Fourth Proportional to 21,004.40, 31,504.08 and 5,423.24

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Solution

The fourth proportional to 21,004.40, 31,504.08 and 5,423.24 is: 8,134.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.40 : 31,504.08 = 5,423.24 : x
  2. Step 2: Convert to fraction form
    21,004.40/31,504.08 = 5,423.24/x
  3. Step 3: Cross multiply
    21,004.40x = 31,504.08 × 5,423.24
  4. Step 4: Simplify right side
    21,004.40x = 170,854,186.82
  5. Step 5: Solve for x
    x = 170,854,186.82/21,004.40
  6. Step 6: Final answer
    x = 8,134.21

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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.