Home / 31,911.04-47,862.84-8,539.32

Finding the Fourth Proportional to 31,911.04, 47,862.84 and 8,539.32

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Solution

The fourth proportional to 31,911.04, 47,862.84 and 8,539.32 is: 12,807.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,911.04 : 47,862.84 = 8,539.32 : x
  2. Step 2: Convert to fraction form
    31,911.04/47,862.84 = 8,539.32/x
  3. Step 3: Cross multiply
    31,911.04x = 47,862.84 × 8,539.32
  4. Step 4: Simplify right side
    31,911.04x = 408,716,106.87
  5. Step 5: Solve for x
    x = 408,716,106.87/31,911.04
  6. Step 6: Final answer
    x = 12,807.98

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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.