Home / 12,621.53-18,938.82-5,606.39

Finding the Fourth Proportional to 12,621.53, 18,938.82 and 5,606.39

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Solution

The fourth proportional to 12,621.53, 18,938.82 and 5,606.39 is: 8,412.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.53 : 18,938.82 = 5,606.39 : x
  2. Step 2: Convert to fraction form
    12,621.53/18,938.82 = 5,606.39/x
  3. Step 3: Cross multiply
    12,621.53x = 18,938.82 × 5,606.39
  4. Step 4: Simplify right side
    12,621.53x = 106,178,411.06
  5. Step 5: Solve for x
    x = 106,178,411.06/12,621.53
  6. Step 6: Final answer
    x = 8,412.48

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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.