Home / 13,187.04-19,690.20-11,238.24

Finding the Fourth Proportional to 13,187.04, 19,690.20 and 11,238.24

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Solution

The fourth proportional to 13,187.04, 19,690.20 and 11,238.24 is: 16,780.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.04 : 19,690.20 = 11,238.24 : x
  2. Step 2: Convert to fraction form
    13,187.04/19,690.20 = 11,238.24/x
  3. Step 3: Cross multiply
    13,187.04x = 19,690.20 × 11,238.24
  4. Step 4: Simplify right side
    13,187.04x = 221,283,193.25
  5. Step 5: Solve for x
    x = 221,283,193.25/13,187.04
  6. Step 6: Final answer
    x = 16,780.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.