Home / 16,928.80-25,364.40-13,991.20

Finding the Fourth Proportional to 16,928.80, 25,364.40 and 13,991.20

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Solution

The fourth proportional to 16,928.80, 25,364.40 and 13,991.20 is: 20,963.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,928.80 : 25,364.40 = 13,991.20 : x
  2. Step 2: Convert to fraction form
    16,928.80/25,364.40 = 13,991.20/x
  3. Step 3: Cross multiply
    16,928.80x = 25,364.40 × 13,991.20
  4. Step 4: Simplify right side
    16,928.80x = 354,878,393.28
  5. Step 5: Solve for x
    x = 354,878,393.28/16,928.80
  6. Step 6: Final answer
    x = 20,963.00

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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.