Home / 13,605.87-18,742.59-11,582.76

Finding the Fourth Proportional to 13,605.87, 18,742.59 and 11,582.76

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Solution

The fourth proportional to 13,605.87, 18,742.59 and 11,582.76 is: 15,955.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605.87 : 18,742.59 = 11,582.76 : x
  2. Step 2: Convert to fraction form
    13,605.87/18,742.59 = 11,582.76/x
  3. Step 3: Cross multiply
    13,605.87x = 18,742.59 × 11,582.76
  4. Step 4: Simplify right side
    13,605.87x = 217,090,992.03
  5. Step 5: Solve for x
    x = 217,090,992.03/13,605.87
  6. Step 6: Final answer
    x = 15,955.68

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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.