Home / 12,690.18-19,037.10-3,925.78

Finding the Fourth Proportional to 12,690.18, 19,037.10 and 3,925.78

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Solution

The fourth proportional to 12,690.18, 19,037.10 and 3,925.78 is: 5,889.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,690.18 : 19,037.10 = 3,925.78 : x
  2. Step 2: Convert to fraction form
    12,690.18/19,037.10 = 3,925.78/x
  3. Step 3: Cross multiply
    12,690.18x = 19,037.10 × 3,925.78
  4. Step 4: Simplify right side
    12,690.18x = 74,735,490.23
  5. Step 5: Solve for x
    x = 74,735,490.23/12,690.18
  6. Step 6: Final answer
    x = 5,889.24

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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.