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Finding the Fourth Proportional to 21,885.70, 32,828.55 and 6,304.90

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Solution

The fourth proportional to 21,885.70, 32,828.55 and 6,304.90 is: 9,457.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,885.70 : 32,828.55 = 6,304.90 : x
  2. Step 2: Convert to fraction form
    21,885.70/32,828.55 = 6,304.90/x
  3. Step 3: Cross multiply
    21,885.70x = 32,828.55 × 6,304.90
  4. Step 4: Simplify right side
    21,885.70x = 206,980,724.90
  5. Step 5: Solve for x
    x = 206,980,724.90/21,885.70
  6. Step 6: Final answer
    x = 9,457.35

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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.