Home / 13,518.36-18,654.57-7,550.40

Finding the Fourth Proportional to 13,518.36, 18,654.57 and 7,550.40

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Solution

The fourth proportional to 13,518.36, 18,654.57 and 7,550.40 is: 10,419.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.36 : 18,654.57 = 7,550.40 : x
  2. Step 2: Convert to fraction form
    13,518.36/18,654.57 = 7,550.40/x
  3. Step 3: Cross multiply
    13,518.36x = 18,654.57 × 7,550.40
  4. Step 4: Simplify right side
    13,518.36x = 140,849,465.33
  5. Step 5: Solve for x
    x = 140,849,465.33/13,518.36
  6. Step 6: Final answer
    x = 10,419.12

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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.