Home / 15,506.87-21,399.46-8,433.25

Finding the Fourth Proportional to 15,506.87, 21,399.46 and 8,433.25

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Solution

The fourth proportional to 15,506.87, 21,399.46 and 8,433.25 is: 11,637.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,506.87 : 21,399.46 = 8,433.25 : x
  2. Step 2: Convert to fraction form
    15,506.87/21,399.46 = 8,433.25/x
  3. Step 3: Cross multiply
    15,506.87x = 21,399.46 × 8,433.25
  4. Step 4: Simplify right side
    15,506.87x = 180,466,921.46
  5. Step 5: Solve for x
    x = 180,466,921.46/15,506.87
  6. Step 6: Final answer
    x = 11,637.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.