Home / 12,961,881.80-19,440,489.90-8,160,979.40

Finding the Fourth Proportional to 12,961,881.80, 19,440,489.90 and 8,160,979.40

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Solution

The fourth proportional to 12,961,881.80, 19,440,489.90 and 8,160,979.40 is: 12,240,000.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,961,881.80 : 19,440,489.90 = 8,160,979.40 : x
  2. Step 2: Convert to fraction form
    12,961,881.80/19,440,489.90 = 8,160,979.40/x
  3. Step 3: Cross multiply
    12,961,881.80x = 19,440,489.90 × 8,160,979.40
  4. Step 4: Simplify right side
    12,961,881.80x = 158,653,437,599,808.06
  5. Step 5: Solve for x
    x = 158,653,437,599,808.06/12,961,881.80
  6. Step 6: Final answer
    x = 12,240,000.34

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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.