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Finding the Fourth Proportional to 19,405.95, 29,109.06 and 8,303.28

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Solution

The fourth proportional to 19,405.95, 29,109.06 and 8,303.28 is: 12,454.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,405.95 : 29,109.06 = 8,303.28 : x
  2. Step 2: Convert to fraction form
    19,405.95/29,109.06 = 8,303.28/x
  3. Step 3: Cross multiply
    19,405.95x = 29,109.06 × 8,303.28
  4. Step 4: Simplify right side
    19,405.95x = 241,700,675.72
  5. Step 5: Solve for x
    x = 241,700,675.72/19,405.95
  6. Step 6: Final answer
    x = 12,454.98

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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.