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Finding the Fourth Proportional to 21,482.29, 32,203.98 and 7,628.05

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Solution

The fourth proportional to 21,482.29, 32,203.98 and 7,628.05 is: 11,435.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,482.29 : 32,203.98 = 7,628.05 : x
  2. Step 2: Convert to fraction form
    21,482.29/32,203.98 = 7,628.05/x
  3. Step 3: Cross multiply
    21,482.29x = 32,203.98 × 7,628.05
  4. Step 4: Simplify right side
    21,482.29x = 245,653,569.64
  5. Step 5: Solve for x
    x = 245,653,569.64/21,482.29
  6. Step 6: Final answer
    x = 11,435.17

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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.