Home / 12,688.80-19,037.28-3,925.44

Finding the Fourth Proportional to 12,688.80, 19,037.28 and 3,925.44

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Solution

The fourth proportional to 12,688.80, 19,037.28 and 3,925.44 is: 5,889.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688.80 : 19,037.28 = 3,925.44 : x
  2. Step 2: Convert to fraction form
    12,688.80/19,037.28 = 3,925.44/x
  3. Step 3: Cross multiply
    12,688.80x = 19,037.28 × 3,925.44
  4. Step 4: Simplify right side
    12,688.80x = 74,729,700.40
  5. Step 5: Solve for x
    x = 74,729,700.40/12,688.80
  6. Step 6: Final answer
    x = 5,889.42

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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.