Home / 11,155,817.79-15,401,137.21-7,808,136.55

Finding the Fourth Proportional to 11,155,817.79, 15,401,137.21 and 7,808,136.55

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Solution

The fourth proportional to 11,155,817.79, 15,401,137.21 and 7,808,136.55 is: 10,779,503.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,155,817.79 : 15,401,137.21 = 7,808,136.55 : x
  2. Step 2: Convert to fraction form
    11,155,817.79/15,401,137.21 = 7,808,136.55/x
  3. Step 3: Cross multiply
    11,155,817.79x = 15,401,137.21 × 7,808,136.55
  4. Step 4: Simplify right side
    11,155,817.79x = 120,254,182,302,942.84
  5. Step 5: Solve for x
    x = 120,254,182,302,942.84/11,155,817.79
  6. Step 6: Final answer
    x = 10,779,503.98

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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.