Home / 13,579,158.72-18,739,731.78-7,779,061.44

Finding the Fourth Proportional to 13,579,158.72, 18,739,731.78 and 7,779,061.44

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Solution

The fourth proportional to 13,579,158.72, 18,739,731.78 and 7,779,061.44 is: 10,735,387.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579,158.72 : 18,739,731.78 = 7,779,061.44 : x
  2. Step 2: Convert to fraction form
    13,579,158.72/18,739,731.78 = 7,779,061.44/x
  3. Step 3: Cross multiply
    13,579,158.72x = 18,739,731.78 × 7,779,061.44
  4. Step 4: Simplify right side
    13,579,158.72x = 145,777,524,885,740.59
  5. Step 5: Solve for x
    x = 145,777,524,885,740.59/13,579,158.72
  6. Step 6: Final answer
    x = 10,735,387.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.