Home / 13,137.86-18,130.76-7,473.14

Finding the Fourth Proportional to 13,137.86, 18,130.76 and 7,473.14

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Solution

The fourth proportional to 13,137.86, 18,130.76 and 7,473.14 is: 10,313.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137.86 : 18,130.76 = 7,473.14 : x
  2. Step 2: Convert to fraction form
    13,137.86/18,130.76 = 7,473.14/x
  3. Step 3: Cross multiply
    13,137.86x = 18,130.76 × 7,473.14
  4. Step 4: Simplify right side
    13,137.86x = 135,493,707.79
  5. Step 5: Solve for x
    x = 135,493,707.79/13,137.86
  6. Step 6: Final answer
    x = 10,313.23

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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.