Home / 15,928.02-21,976.65-9,639.18

Finding the Fourth Proportional to 15,928.02, 21,976.65 and 9,639.18

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Solution

The fourth proportional to 15,928.02, 21,976.65 and 9,639.18 is: 13,299.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,928.02 : 21,976.65 = 9,639.18 : x
  2. Step 2: Convert to fraction form
    15,928.02/21,976.65 = 9,639.18/x
  3. Step 3: Cross multiply
    15,928.02x = 21,976.65 × 9,639.18
  4. Step 4: Simplify right side
    15,928.02x = 211,836,885.15
  5. Step 5: Solve for x
    x = 211,836,885.15/15,928.02
  6. Step 6: Final answer
    x = 13,299.64

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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.