Home / 21,928.32-32,892.48-7,890.21

Finding the Fourth Proportional to 21,928.32, 32,892.48 and 7,890.21

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Solution

The fourth proportional to 21,928.32, 32,892.48 and 7,890.21 is: 11,835.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,928.32 : 32,892.48 = 7,890.21 : x
  2. Step 2: Convert to fraction form
    21,928.32/32,892.48 = 7,890.21/x
  3. Step 3: Cross multiply
    21,928.32x = 32,892.48 × 7,890.21
  4. Step 4: Simplify right side
    21,928.32x = 259,528,574.62
  5. Step 5: Solve for x
    x = 259,528,574.62/21,928.32
  6. Step 6: Final answer
    x = 11,835.32

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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.