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Finding the Fourth Proportional to 21,799.35, 32,701.46 and 8,653.05

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Solution

The fourth proportional to 21,799.35, 32,701.46 and 8,653.05 is: 12,980.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,799.35 : 32,701.46 = 8,653.05 : x
  2. Step 2: Convert to fraction form
    21,799.35/32,701.46 = 8,653.05/x
  3. Step 3: Cross multiply
    21,799.35x = 32,701.46 × 8,653.05
  4. Step 4: Simplify right side
    21,799.35x = 282,967,325.19
  5. Step 5: Solve for x
    x = 282,967,325.19/21,799.35
  6. Step 6: Final answer
    x = 12,980.54

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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.