Home / 13,518,942-20,280,955.40-5,432,558.72

Finding the Fourth Proportional to 13,518,942, 20,280,955.40 and 5,432,558.72

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Solution

The fourth proportional to 13,518,942, 20,280,955.40 and 5,432,558.72 is: 8,149,859.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518,942 : 20,280,955.40 = 5,432,558.72 : x
  2. Step 2: Convert to fraction form
    13,518,942/20,280,955.40 = 5,432,558.72/x
  3. Step 3: Cross multiply
    13,518,942x = 20,280,955.40 × 5,432,558.72
  4. Step 4: Simplify right side
    13,518,942x = 110,177,480,979,633.52
  5. Step 5: Solve for x
    x = 110,177,480,979,633.52/13,518,942
  6. Step 6: Final answer
    x = 8,149,859.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.