Home / 13,650.63-18,837.40-7,681.94

Finding the Fourth Proportional to 13,650.63, 18,837.40 and 7,681.94

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Solution

The fourth proportional to 13,650.63, 18,837.40 and 7,681.94 is: 10,600.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,650.63 : 18,837.40 = 7,681.94 : x
  2. Step 2: Convert to fraction form
    13,650.63/18,837.40 = 7,681.94/x
  3. Step 3: Cross multiply
    13,650.63x = 18,837.40 × 7,681.94
  4. Step 4: Simplify right side
    13,650.63x = 144,707,776.56
  5. Step 5: Solve for x
    x = 144,707,776.56/13,650.63
  6. Step 6: Final answer
    x = 10,600.81

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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.