Home / 15,036,021.80-20,749,718.62-8,160,503.86

Finding the Fourth Proportional to 15,036,021.80, 20,749,718.62 and 8,160,503.86

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Solution

The fourth proportional to 15,036,021.80, 20,749,718.62 and 8,160,503.86 is: 11,261,499.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,036,021.80 : 20,749,718.62 = 8,160,503.86 : x
  2. Step 2: Convert to fraction form
    15,036,021.80/20,749,718.62 = 8,160,503.86/x
  3. Step 3: Cross multiply
    15,036,021.80x = 20,749,718.62 × 8,160,503.86
  4. Step 4: Simplify right side
    15,036,021.80x = 169,328,158,892,423.88
  5. Step 5: Solve for x
    x = 169,328,158,892,423.88/15,036,021.80
  6. Step 6: Final answer
    x = 11,261,499.96

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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.