Home / 13,935.50-19,230.29-8,270.49

Finding the Fourth Proportional to 13,935.50, 19,230.29 and 8,270.49

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Solution

The fourth proportional to 13,935.50, 19,230.29 and 8,270.49 is: 11,412.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,935.50 : 19,230.29 = 8,270.49 : x
  2. Step 2: Convert to fraction form
    13,935.50/19,230.29 = 8,270.49/x
  3. Step 3: Cross multiply
    13,935.50x = 19,230.29 × 8,270.49
  4. Step 4: Simplify right side
    13,935.50x = 159,043,941.82
  5. Step 5: Solve for x
    x = 159,043,941.82/13,935.50
  6. Step 6: Final answer
    x = 11,412.86

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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.