Home / 18,779,678.36-28,179,984.16-10,143,604.52

Finding the Fourth Proportional to 18,779,678.36, 28,179,984.16 and 10,143,604.52

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Solution

The fourth proportional to 18,779,678.36, 28,179,984.16 and 10,143,604.52 is: 15,221,060.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,779,678.36 : 28,179,984.16 = 10,143,604.52 : x
  2. Step 2: Convert to fraction form
    18,779,678.36/28,179,984.16 = 10,143,604.52/x
  3. Step 3: Cross multiply
    18,779,678.36x = 28,179,984.16 × 10,143,604.52
  4. Step 4: Simplify right side
    18,779,678.36x = 285,846,614,698,904.38
  5. Step 5: Solve for x
    x = 285,846,614,698,904.38/18,779,678.36
  6. Step 6: Final answer
    x = 15,221,060.19

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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.