Home / 13,428.52-18,528.36-8,123.22

Finding the Fourth Proportional to 13,428.52, 18,528.36 and 8,123.22

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Solution

The fourth proportional to 13,428.52, 18,528.36 and 8,123.22 is: 11,208.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.52 : 18,528.36 = 8,123.22 : x
  2. Step 2: Convert to fraction form
    13,428.52/18,528.36 = 8,123.22/x
  3. Step 3: Cross multiply
    13,428.52x = 18,528.36 × 8,123.22
  4. Step 4: Simplify right side
    13,428.52x = 150,509,944.52
  5. Step 5: Solve for x
    x = 150,509,944.52/13,428.52
  6. Step 6: Final answer
    x = 11,208.23

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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.