Home / 13,977.60-19,288.02-7,690.38

Finding the Fourth Proportional to 13,977.60, 19,288.02 and 7,690.38

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Solution

The fourth proportional to 13,977.60, 19,288.02 and 7,690.38 is: 10,612.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,977.60 : 19,288.02 = 7,690.38 : x
  2. Step 2: Convert to fraction form
    13,977.60/19,288.02 = 7,690.38/x
  3. Step 3: Cross multiply
    13,977.60x = 19,288.02 × 7,690.38
  4. Step 4: Simplify right side
    13,977.60x = 148,332,203.25
  5. Step 5: Solve for x
    x = 148,332,203.25/13,977.60
  6. Step 6: Final answer
    x = 10,612.14

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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.