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Finding the Fourth Proportional to 14,409.73, 19,889.19 and 9,387.73

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Solution

The fourth proportional to 14,409.73, 19,889.19 and 9,387.73 is: 12,957.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,409.73 : 19,889.19 = 9,387.73 : x
  2. Step 2: Convert to fraction form
    14,409.73/19,889.19 = 9,387.73/x
  3. Step 3: Cross multiply
    14,409.73x = 19,889.19 × 9,387.73
  4. Step 4: Simplify right side
    14,409.73x = 186,714,345.64
  5. Step 5: Solve for x
    x = 186,714,345.64/14,409.73
  6. Step 6: Final answer
    x = 12,957.52

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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.