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Finding the Fourth Proportional to 19,477, 26,882.46 and 12,401.80

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Solution

The fourth proportional to 19,477, 26,882.46 and 12,401.80 is: 17,117.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,477 : 26,882.46 = 12,401.80 : x
  2. Step 2: Convert to fraction form
    19,477/26,882.46 = 12,401.80/x
  3. Step 3: Cross multiply
    19,477x = 26,882.46 × 12,401.80
  4. Step 4: Simplify right side
    19,477x = 333,390,892.43
  5. Step 5: Solve for x
    x = 333,390,892.43/19,477
  6. Step 6: Final answer
    x = 17,117.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.