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Finding the Fourth Proportional to 21,433.84, 32,148.64 and 7,392.48

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Solution

The fourth proportional to 21,433.84, 32,148.64 and 7,392.48 is: 11,087.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,433.84 : 32,148.64 = 7,392.48 : x
  2. Step 2: Convert to fraction form
    21,433.84/32,148.64 = 7,392.48/x
  3. Step 3: Cross multiply
    21,433.84x = 32,148.64 × 7,392.48
  4. Step 4: Simplify right side
    21,433.84x = 237,658,178.23
  5. Step 5: Solve for x
    x = 237,658,178.23/21,433.84
  6. Step 6: Final answer
    x = 11,087.99

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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.