Home / 21,440.40-32,164.40-7,399.32

Finding the Fourth Proportional to 21,440.40, 32,164.40 and 7,399.32

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Solution

The fourth proportional to 21,440.40, 32,164.40 and 7,399.32 is: 11,100.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,440.40 : 32,164.40 = 7,399.32 : x
  2. Step 2: Convert to fraction form
    21,440.40/32,164.40 = 7,399.32/x
  3. Step 3: Cross multiply
    21,440.40x = 32,164.40 × 7,399.32
  4. Step 4: Simplify right side
    21,440.40x = 237,994,688.21
  5. Step 5: Solve for x
    x = 237,994,688.21/21,440.40
  6. Step 6: Final answer
    x = 11,100.29

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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.