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Finding the Fourth Proportional to 21,837.34, 32,757.72 and 7,800.40

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Solution

The fourth proportional to 21,837.34, 32,757.72 and 7,800.40 is: 11,701.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,837.34 : 32,757.72 = 7,800.40 : x
  2. Step 2: Convert to fraction form
    21,837.34/32,757.72 = 7,800.40/x
  3. Step 3: Cross multiply
    21,837.34x = 32,757.72 × 7,800.40
  4. Step 4: Simplify right side
    21,837.34x = 255,523,319.09
  5. Step 5: Solve for x
    x = 255,523,319.09/21,837.34
  6. Step 6: Final answer
    x = 11,701.21

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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.