Home / 12,910,853.80-19,366,280.70-7,872,005.80

Finding the Fourth Proportional to 12,910,853.80, 19,366,280.70 and 7,872,005.80

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Solution

The fourth proportional to 12,910,853.80, 19,366,280.70 and 7,872,005.80 is: 11,808,008.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,910,853.80 : 19,366,280.70 = 7,872,005.80 : x
  2. Step 2: Convert to fraction form
    12,910,853.80/19,366,280.70 = 7,872,005.80/x
  3. Step 3: Cross multiply
    12,910,853.80x = 19,366,280.70 × 7,872,005.80
  4. Step 4: Simplify right side
    12,910,853.80x = 152,451,473,994,828.06
  5. Step 5: Solve for x
    x = 152,451,473,994,828.06/12,910,853.80
  6. Step 6: Final answer
    x = 11,808,008.70

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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.