Home / 15,209,155,861.38-20,985,859,890.90-8,776,629,163.86

Finding the Fourth Proportional to 15,209,155,861.38, 20,985,859,890.90 and 8,776,629,163.86

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Solution

The fourth proportional to 15,209,155,861.38, 20,985,859,890.90 and 8,776,629,163.86 is: 12,110,146,784.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,209,155,861.38 : 20,985,859,890.90 = 8,776,629,163.86 : x
  2. Step 2: Convert to fraction form
    15,209,155,861.38/20,985,859,890.90 = 8,776,629,163.86/x
  3. Step 3: Cross multiply
    15,209,155,861.38x = 20,985,859,890.90 × 8,776,629,163.86
  4. Step 4: Simplify right side
    15,209,155,861.38x = 184,185,109,947,152,793,600
  5. Step 5: Solve for x
    x = 184,185,109,947,152,793,600/15,209,155,861.38
  6. Step 6: Final answer
    x = 12,110,146,784.34

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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.