Home / 11,464.31-15,820.37-6,428.81

Finding the Fourth Proportional to 11,464.31, 15,820.37 and 6,428.81

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Solution

The fourth proportional to 11,464.31, 15,820.37 and 6,428.81 is: 8,871.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,464.31 : 15,820.37 = 6,428.81 : x
  2. Step 2: Convert to fraction form
    11,464.31/15,820.37 = 6,428.81/x
  3. Step 3: Cross multiply
    11,464.31x = 15,820.37 × 6,428.81
  4. Step 4: Simplify right side
    11,464.31x = 101,706,041.61
  5. Step 5: Solve for x
    x = 101,706,041.61/11,464.31
  6. Step 6: Final answer
    x = 8,871.54

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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.