Home / 13,420.02-18,516.65-8,114.72

Finding the Fourth Proportional to 13,420.02, 18,516.65 and 8,114.72

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Solution

The fourth proportional to 13,420.02, 18,516.65 and 8,114.72 is: 11,196.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.02 : 18,516.65 = 8,114.72 : x
  2. Step 2: Convert to fraction form
    13,420.02/18,516.65 = 8,114.72/x
  3. Step 3: Cross multiply
    13,420.02x = 18,516.65 × 8,114.72
  4. Step 4: Simplify right side
    13,420.02x = 150,257,435.81
  5. Step 5: Solve for x
    x = 150,257,435.81/13,420.02
  6. Step 6: Final answer
    x = 11,196.51

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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.