Home / 15,435.72-21,301.40-8,362.14

Finding the Fourth Proportional to 15,435.72, 21,301.40 and 8,362.14

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Solution

The fourth proportional to 15,435.72, 21,301.40 and 8,362.14 is: 11,539.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,435.72 : 21,301.40 = 8,362.14 : x
  2. Step 2: Convert to fraction form
    15,435.72/21,301.40 = 8,362.14/x
  3. Step 3: Cross multiply
    15,435.72x = 21,301.40 × 8,362.14
  4. Step 4: Simplify right side
    15,435.72x = 178,125,289.00
  5. Step 5: Solve for x
    x = 178,125,289.00/15,435.72
  6. Step 6: Final answer
    x = 11,539.81

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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.