Home / 13,537.78-18,690.95-12,119.05

Finding the Fourth Proportional to 13,537.78, 18,690.95 and 12,119.05

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Solution

The fourth proportional to 13,537.78, 18,690.95 and 12,119.05 is: 16,732.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,537.78 : 18,690.95 = 12,119.05 : x
  2. Step 2: Convert to fraction form
    13,537.78/18,690.95 = 12,119.05/x
  3. Step 3: Cross multiply
    13,537.78x = 18,690.95 × 12,119.05
  4. Step 4: Simplify right side
    13,537.78x = 226,516,403.55
  5. Step 5: Solve for x
    x = 226,516,403.55/13,537.78
  6. Step 6: Final answer
    x = 16,732.17

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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.