Home / 18,477.18-25,531.11-13,690.26

Finding the Fourth Proportional to 18,477.18, 25,531.11 and 13,690.26

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Solution

The fourth proportional to 18,477.18, 25,531.11 and 13,690.26 is: 18,916.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,477.18 : 25,531.11 = 13,690.26 : x
  2. Step 2: Convert to fraction form
    18,477.18/25,531.11 = 13,690.26/x
  3. Step 3: Cross multiply
    18,477.18x = 25,531.11 × 13,690.26
  4. Step 4: Simplify right side
    18,477.18x = 349,527,533.99
  5. Step 5: Solve for x
    x = 349,527,533.99/18,477.18
  6. Step 6: Final answer
    x = 18,916.71

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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.