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Finding the Fourth Proportional to 19,398.63, 29,099.63 and 5,358.67

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Solution

The fourth proportional to 19,398.63, 29,099.63 and 5,358.67 is: 8,038.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,398.63 : 29,099.63 = 5,358.67 : x
  2. Step 2: Convert to fraction form
    19,398.63/29,099.63 = 5,358.67/x
  3. Step 3: Cross multiply
    19,398.63x = 29,099.63 × 5,358.67
  4. Step 4: Simplify right side
    19,398.63x = 155,935,314.29
  5. Step 5: Solve for x
    x = 155,935,314.29/19,398.63
  6. Step 6: Final answer
    x = 8,038.47

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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.