Home / 14,183.40-21,275.10-12,455.40

Finding the Fourth Proportional to 14,183.40, 21,275.10 and 12,455.40

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Solution

The fourth proportional to 14,183.40, 21,275.10 and 12,455.40 is: 18,683.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,183.40 : 21,275.10 = 12,455.40 : x
  2. Step 2: Convert to fraction form
    14,183.40/21,275.10 = 12,455.40/x
  3. Step 3: Cross multiply
    14,183.40x = 21,275.10 × 12,455.40
  4. Step 4: Simplify right side
    14,183.40x = 264,989,880.54
  5. Step 5: Solve for x
    x = 264,989,880.54/14,183.40
  6. Step 6: Final answer
    x = 18,683.10

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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.