Home / 31,913.51-47,870.19-8,539.95

Finding the Fourth Proportional to 31,913.51, 47,870.19 and 8,539.95

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Solution

The fourth proportional to 31,913.51, 47,870.19 and 8,539.95 is: 12,809.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,913.51 : 47,870.19 = 8,539.95 : x
  2. Step 2: Convert to fraction form
    31,913.51/47,870.19 = 8,539.95/x
  3. Step 3: Cross multiply
    31,913.51x = 47,870.19 × 8,539.95
  4. Step 4: Simplify right side
    31,913.51x = 408,808,939.33
  5. Step 5: Solve for x
    x = 408,808,939.33/31,913.51
  6. Step 6: Final answer
    x = 12,809.90

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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.