Home / 13,784.57-19,024.64-7,817.70

Finding the Fourth Proportional to 13,784.57, 19,024.64 and 7,817.70

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Solution

The fourth proportional to 13,784.57, 19,024.64 and 7,817.70 is: 10,789.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,784.57 : 19,024.64 = 7,817.70 : x
  2. Step 2: Convert to fraction form
    13,784.57/19,024.64 = 7,817.70/x
  3. Step 3: Cross multiply
    13,784.57x = 19,024.64 × 7,817.70
  4. Step 4: Simplify right side
    13,784.57x = 148,728,928.13
  5. Step 5: Solve for x
    x = 148,728,928.13/13,784.57
  6. Step 6: Final answer
    x = 10,789.52

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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.