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Finding the Fourth Proportional to 21,339.84, 32,015.79 and 7,302.90

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Solution

The fourth proportional to 21,339.84, 32,015.79 and 7,302.90 is: 10,956.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,339.84 : 32,015.79 = 7,302.90 : x
  2. Step 2: Convert to fraction form
    21,339.84/32,015.79 = 7,302.90/x
  3. Step 3: Cross multiply
    21,339.84x = 32,015.79 × 7,302.90
  4. Step 4: Simplify right side
    21,339.84x = 233,808,112.79
  5. Step 5: Solve for x
    x = 233,808,112.79/21,339.84
  6. Step 6: Final answer
    x = 10,956.41

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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.