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Finding the Fourth Proportional to 19,345.15, 29,018.06 and 6,865.88

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Solution

The fourth proportional to 19,345.15, 29,018.06 and 6,865.88 is: 10,298.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,345.15 : 29,018.06 = 6,865.88 : x
  2. Step 2: Convert to fraction form
    19,345.15/29,018.06 = 6,865.88/x
  3. Step 3: Cross multiply
    19,345.15x = 29,018.06 × 6,865.88
  4. Step 4: Simplify right side
    19,345.15x = 199,234,607.50
  5. Step 5: Solve for x
    x = 199,234,607.50/19,345.15
  6. Step 6: Final answer
    x = 10,298.94

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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.