Home / 13,690.91-18,860.69-13,023.87

Finding the Fourth Proportional to 13,690.91, 18,860.69 and 13,023.87

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Solution

The fourth proportional to 13,690.91, 18,860.69 and 13,023.87 is: 17,941.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,690.91 : 18,860.69 = 13,023.87 : x
  2. Step 2: Convert to fraction form
    13,690.91/18,860.69 = 13,023.87/x
  3. Step 3: Cross multiply
    13,690.91x = 18,860.69 × 13,023.87
  4. Step 4: Simplify right side
    13,690.91x = 245,639,109.55
  5. Step 5: Solve for x
    x = 245,639,109.55/13,690.91
  6. Step 6: Final answer
    x = 17,941.77

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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.