Home / 21,921.32-32,878.87-7,130.45

Finding the Fourth Proportional to 21,921.32, 32,878.87 and 7,130.45

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Solution

The fourth proportional to 21,921.32, 32,878.87 and 7,130.45 is: 10,694.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,921.32 : 32,878.87 = 7,130.45 : x
  2. Step 2: Convert to fraction form
    21,921.32/32,878.87 = 7,130.45/x
  3. Step 3: Cross multiply
    21,921.32x = 32,878.87 × 7,130.45
  4. Step 4: Simplify right side
    21,921.32x = 234,441,138.59
  5. Step 5: Solve for x
    x = 234,441,138.59/21,921.32
  6. Step 6: Final answer
    x = 10,694.66

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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.