Home / 13,126.55-18,115.09-7,461.53

Finding the Fourth Proportional to 13,126.55, 18,115.09 and 7,461.53

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Solution

The fourth proportional to 13,126.55, 18,115.09 and 7,461.53 is: 10,297.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,126.55 : 18,115.09 = 7,461.53 : x
  2. Step 2: Convert to fraction form
    13,126.55/18,115.09 = 7,461.53/x
  3. Step 3: Cross multiply
    13,126.55x = 18,115.09 × 7,461.53
  4. Step 4: Simplify right side
    13,126.55x = 135,166,332.78
  5. Step 5: Solve for x
    x = 135,166,332.78/13,126.55
  6. Step 6: Final answer
    x = 10,297.17

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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.