Home / 12,688.91-19,033.37-3,923.63

Finding the Fourth Proportional to 12,688.91, 19,033.37 and 3,923.63

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Solution

The fourth proportional to 12,688.91, 19,033.37 and 3,923.63 is: 5,885.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688.91 : 19,033.37 = 3,923.63 : x
  2. Step 2: Convert to fraction form
    12,688.91/19,033.37 = 3,923.63/x
  3. Step 3: Cross multiply
    12,688.91x = 19,033.37 × 3,923.63
  4. Step 4: Simplify right side
    12,688.91x = 74,679,901.53
  5. Step 5: Solve for x
    x = 74,679,901.53/12,688.91
  6. Step 6: Final answer
    x = 5,885.45

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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.