Home / 28,680,330,861.56-39,578,894,715.48-15,819,682,408.40

Finding the Fourth Proportional to 28,680,330,861.56, 39,578,894,715.48 and 15,819,682,408.40

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Solution

The fourth proportional to 28,680,330,861.56, 39,578,894,715.48 and 15,819,682,408.40 is: 21,831,182,753.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,680,330,861.56 : 39,578,894,715.48 = 15,819,682,408.40 : x
  2. Step 2: Convert to fraction form
    28,680,330,861.56/39,578,894,715.48 = 15,819,682,408.40/x
  3. Step 3: Cross multiply
    28,680,330,861.56x = 39,578,894,715.48 × 15,819,682,408.40
  4. Step 4: Simplify right side
    28,680,330,861.56x = 626,125,544,474,394,755,072
  5. Step 5: Solve for x
    x = 626,125,544,474,394,755,072/28,680,330,861.56
  6. Step 6: Final answer
    x = 21,831,182,753.67

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1.5x scale

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.