Home / 15,399.21-21,254.21-9,730.36

Finding the Fourth Proportional to 15,399.21, 21,254.21 and 9,730.36

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Solution

The fourth proportional to 15,399.21, 21,254.21 and 9,730.36 is: 13,429.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,399.21 : 21,254.21 = 9,730.36 : x
  2. Step 2: Convert to fraction form
    15,399.21/21,254.21 = 9,730.36/x
  3. Step 3: Cross multiply
    15,399.21x = 21,254.21 × 9,730.36
  4. Step 4: Simplify right side
    15,399.21x = 206,811,183.95
  5. Step 5: Solve for x
    x = 206,811,183.95/15,399.21
  6. Step 6: Final answer
    x = 13,429.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.