Home / 13,355.05-18,428.73-7,386.59

Finding the Fourth Proportional to 13,355.05, 18,428.73 and 7,386.59

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Solution

The fourth proportional to 13,355.05, 18,428.73 and 7,386.59 is: 10,192.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,355.05 : 18,428.73 = 7,386.59 : x
  2. Step 2: Convert to fraction form
    13,355.05/18,428.73 = 7,386.59/x
  3. Step 3: Cross multiply
    13,355.05x = 18,428.73 × 7,386.59
  4. Step 4: Simplify right side
    13,355.05x = 136,125,472.73
  5. Step 5: Solve for x
    x = 136,125,472.73/13,355.05
  6. Step 6: Final answer
    x = 10,192.81

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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.