Home / 21,378.84-32,073.12-7,338.32

Finding the Fourth Proportional to 21,378.84, 32,073.12 and 7,338.32

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Solution

The fourth proportional to 21,378.84, 32,073.12 and 7,338.32 is: 11,009.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,378.84 : 32,073.12 = 7,338.32 : x
  2. Step 2: Convert to fraction form
    21,378.84/32,073.12 = 7,338.32/x
  3. Step 3: Cross multiply
    21,378.84x = 32,073.12 × 7,338.32
  4. Step 4: Simplify right side
    21,378.84x = 235,362,817.96
  5. Step 5: Solve for x
    x = 235,362,817.96/21,378.84
  6. Step 6: Final answer
    x = 11,009.15

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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.