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Finding the Fourth Proportional to 19,959.96, 29,946.60 and 13,323

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Solution

The fourth proportional to 19,959.96, 29,946.60 and 13,323 is: 19,988.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,959.96 : 29,946.60 = 13,323 : x
  2. Step 2: Convert to fraction form
    19,959.96/29,946.60 = 13,323/x
  3. Step 3: Cross multiply
    19,959.96x = 29,946.60 × 13,323
  4. Step 4: Simplify right side
    19,959.96x = 398,978,551.80
  5. Step 5: Solve for x
    x = 398,978,551.80/19,959.96
  6. Step 6: Final answer
    x = 19,988.95

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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.