Home / 13,355.28-18,431.01-7,386.93

Finding the Fourth Proportional to 13,355.28, 18,431.01 and 7,386.93

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Solution

The fourth proportional to 13,355.28, 18,431.01 and 7,386.93 is: 10,194.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,355.28 : 18,431.01 = 7,386.93 : x
  2. Step 2: Convert to fraction form
    13,355.28/18,431.01 = 7,386.93/x
  3. Step 3: Cross multiply
    13,355.28x = 18,431.01 × 7,386.93
  4. Step 4: Simplify right side
    13,355.28x = 136,148,580.70
  5. Step 5: Solve for x
    x = 136,148,580.70/13,355.28
  6. Step 6: Final answer
    x = 10,194.36

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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.