Home / 12,787,287.51-19,087,648.40-11,173,019.07

Finding the Fourth Proportional to 12,787,287.51, 19,087,648.40 and 11,173,019.07

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Solution

The fourth proportional to 12,787,287.51, 19,087,648.40 and 11,173,019.07 is: 16,678,021.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,787,287.51 : 19,087,648.40 = 11,173,019.07 : x
  2. Step 2: Convert to fraction form
    12,787,287.51/19,087,648.40 = 11,173,019.07/x
  3. Step 3: Cross multiply
    12,787,287.51x = 19,087,648.40 × 11,173,019.07
  4. Step 4: Simplify right side
    12,787,287.51x = 213,266,659,518,789.91
  5. Step 5: Solve for x
    x = 213,266,659,518,789.91/12,787,287.51
  6. Step 6: Final answer
    x = 16,678,021.77

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.