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Finding the Fourth Proportional to 19,402.17, 26,753.81 and 13,103.61

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Solution

The fourth proportional to 19,402.17, 26,753.81 and 13,103.61 is: 18,068.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,402.17 : 26,753.81 = 13,103.61 : x
  2. Step 2: Convert to fraction form
    19,402.17/26,753.81 = 13,103.61/x
  3. Step 3: Cross multiply
    19,402.17x = 26,753.81 × 13,103.61
  4. Step 4: Simplify right side
    19,402.17x = 350,571,426.74
  5. Step 5: Solve for x
    x = 350,571,426.74/19,402.17
  6. Step 6: Final answer
    x = 18,068.67

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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.