Home / 21,104.40-31,652.28-7,254.48

Finding the Fourth Proportional to 21,104.40, 31,652.28 and 7,254.48

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Solution

The fourth proportional to 21,104.40, 31,652.28 and 7,254.48 is: 10,880.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,104.40 : 31,652.28 = 7,254.48 : x
  2. Step 2: Convert to fraction form
    21,104.40/31,652.28 = 7,254.48/x
  3. Step 3: Cross multiply
    21,104.40x = 31,652.28 × 7,254.48
  4. Step 4: Simplify right side
    21,104.40x = 229,620,832.21
  5. Step 5: Solve for x
    x = 229,620,832.21/21,104.40
  6. Step 6: Final answer
    x = 10,880.24

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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.