Home / 31,870.09-47,803.31-12,150.64

Finding the Fourth Proportional to 31,870.09, 47,803.31 and 12,150.64

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Solution

The fourth proportional to 31,870.09, 47,803.31 and 12,150.64 is: 18,225.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,870.09 : 47,803.31 = 12,150.64 : x
  2. Step 2: Convert to fraction form
    31,870.09/47,803.31 = 12,150.64/x
  3. Step 3: Cross multiply
    31,870.09x = 47,803.31 × 12,150.64
  4. Step 4: Simplify right side
    31,870.09x = 580,840,510.85
  5. Step 5: Solve for x
    x = 580,840,510.85/31,870.09
  6. Step 6: Final answer
    x = 18,225.26

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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.