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Finding the Fourth Proportional to 21,903.60, 32,833.80 and 8,738.40

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Solution

The fourth proportional to 21,903.60, 32,833.80 and 8,738.40 is: 13,098.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,903.60 : 32,833.80 = 8,738.40 : x
  2. Step 2: Convert to fraction form
    21,903.60/32,833.80 = 8,738.40/x
  3. Step 3: Cross multiply
    21,903.60x = 32,833.80 × 8,738.40
  4. Step 4: Simplify right side
    21,903.60x = 286,914,877.92
  5. Step 5: Solve for x
    x = 286,914,877.92/21,903.60
  6. Step 6: Final answer
    x = 13,098.98

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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.