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Finding the Fourth Proportional to 21,903.93, 32,880.48 and 8,765.46

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Solution

The fourth proportional to 21,903.93, 32,880.48 and 8,765.46 is: 13,158.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,903.93 : 32,880.48 = 8,765.46 : x
  2. Step 2: Convert to fraction form
    21,903.93/32,880.48 = 8,765.46/x
  3. Step 3: Cross multiply
    21,903.93x = 32,880.48 × 8,765.46
  4. Step 4: Simplify right side
    21,903.93x = 288,212,532.22
  5. Step 5: Solve for x
    x = 288,212,532.22/21,903.93
  6. Step 6: Final answer
    x = 13,158.03

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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.