Home / 15,797.15-21,792.61-9,420.11

Finding the Fourth Proportional to 15,797.15, 21,792.61 and 9,420.11

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Solution

The fourth proportional to 15,797.15, 21,792.61 and 9,420.11 is: 12,995.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,797.15 : 21,792.61 = 9,420.11 : x
  2. Step 2: Convert to fraction form
    15,797.15/21,792.61 = 9,420.11/x
  3. Step 3: Cross multiply
    15,797.15x = 21,792.61 × 9,420.11
  4. Step 4: Simplify right side
    15,797.15x = 205,288,783.39
  5. Step 5: Solve for x
    x = 205,288,783.39/15,797.15
  6. Step 6: Final answer
    x = 12,995.31

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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.