Home / 15,969.28-22,039.56-9,681.64

Finding the Fourth Proportional to 15,969.28, 22,039.56 and 9,681.64

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Solution

The fourth proportional to 15,969.28, 22,039.56 and 9,681.64 is: 13,361.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,969.28 : 22,039.56 = 9,681.64 : x
  2. Step 2: Convert to fraction form
    15,969.28/22,039.56 = 9,681.64/x
  3. Step 3: Cross multiply
    15,969.28x = 22,039.56 × 9,681.64
  4. Step 4: Simplify right side
    15,969.28x = 213,379,085.68
  5. Step 5: Solve for x
    x = 213,379,085.68/15,969.28
  6. Step 6: Final answer
    x = 13,361.85

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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.