Home / 10,890.37-15,028.86-8,160.07

Finding the Fourth Proportional to 10,890.37, 15,028.86 and 8,160.07

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Solution

The fourth proportional to 10,890.37, 15,028.86 and 8,160.07 is: 11,261.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890.37 : 15,028.86 = 8,160.07 : x
  2. Step 2: Convert to fraction form
    10,890.37/15,028.86 = 8,160.07/x
  3. Step 3: Cross multiply
    10,890.37x = 15,028.86 × 8,160.07
  4. Step 4: Simplify right side
    10,890.37x = 122,636,549.62
  5. Step 5: Solve for x
    x = 122,636,549.62/10,890.37
  6. Step 6: Final answer
    x = 11,261.01

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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.