Home / 12,386.94-18,558.81-10,320.21

Finding the Fourth Proportional to 12,386.94, 18,558.81 and 10,320.21

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Solution

The fourth proportional to 12,386.94, 18,558.81 and 10,320.21 is: 15,462.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,386.94 : 18,558.81 = 10,320.21 : x
  2. Step 2: Convert to fraction form
    12,386.94/18,558.81 = 10,320.21/x
  3. Step 3: Cross multiply
    12,386.94x = 18,558.81 × 10,320.21
  4. Step 4: Simplify right side
    12,386.94x = 191,530,816.55
  5. Step 5: Solve for x
    x = 191,530,816.55/12,386.94
  6. Step 6: Final answer
    x = 15,462.32

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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.