Home / 12,891,654.80-19,305,989.40-9,679,389.20

Finding the Fourth Proportional to 12,891,654.80, 19,305,989.40 and 9,679,389.20

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Solution

The fourth proportional to 12,891,654.80, 19,305,989.40 and 9,679,389.20 is: 14,495,438.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,891,654.80 : 19,305,989.40 = 9,679,389.20 : x
  2. Step 2: Convert to fraction form
    12,891,654.80/19,305,989.40 = 9,679,389.20/x
  3. Step 3: Cross multiply
    12,891,654.80x = 19,305,989.40 × 9,679,389.20
  4. Step 4: Simplify right side
    12,891,654.80x = 186,870,185,293,674.44
  5. Step 5: Solve for x
    x = 186,870,185,293,674.44/12,891,654.80
  6. Step 6: Final answer
    x = 14,495,438.19

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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.