Home / 13,579,158.95-18,739,732.11-7,779,061.67

Finding the Fourth Proportional to 13,579,158.95, 18,739,732.11 and 7,779,061.67

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Solution

The fourth proportional to 13,579,158.95, 18,739,732.11 and 7,779,061.67 is: 10,735,387.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579,158.95 : 18,739,732.11 = 7,779,061.67 : x
  2. Step 2: Convert to fraction form
    13,579,158.95/18,739,732.11 = 7,779,061.67/x
  3. Step 3: Cross multiply
    13,579,158.95x = 18,739,732.11 × 7,779,061.67
  4. Step 4: Simplify right side
    13,579,158.95x = 145,777,531,762,969.22
  5. Step 5: Solve for x
    x = 145,777,531,762,969.22/13,579,158.95
  6. Step 6: Final answer
    x = 10,735,387.39

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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.