Home / 19,784.16-29,617.92-18,928.80

Finding the Fourth Proportional to 19,784.16, 29,617.92 and 18,928.80

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Solution

The fourth proportional to 19,784.16, 29,617.92 and 18,928.80 is: 28,337.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,784.16 : 29,617.92 = 18,928.80 : x
  2. Step 2: Convert to fraction form
    19,784.16/29,617.92 = 18,928.80/x
  3. Step 3: Cross multiply
    19,784.16x = 29,617.92 × 18,928.80
  4. Step 4: Simplify right side
    19,784.16x = 560,631,684.10
  5. Step 5: Solve for x
    x = 560,631,684.10/19,784.16
  6. Step 6: Final answer
    x = 28,337.40

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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.