Home / 28,111.84-42,135.96-11,467.56

Finding the Fourth Proportional to 28,111.84, 42,135.96 and 11,467.56

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Solution

The fourth proportional to 28,111.84, 42,135.96 and 11,467.56 is: 17,188.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,111.84 : 42,135.96 = 11,467.56 : x
  2. Step 2: Convert to fraction form
    28,111.84/42,135.96 = 11,467.56/x
  3. Step 3: Cross multiply
    28,111.84x = 42,135.96 × 11,467.56
  4. Step 4: Simplify right side
    28,111.84x = 483,196,649.46
  5. Step 5: Solve for x
    x = 483,196,649.46/28,111.84
  6. Step 6: Final answer
    x = 17,188.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.