Home / 31,281.61-46,922.04-12,561.31

Finding the Fourth Proportional to 31,281.61, 46,922.04 and 12,561.31

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Solution

The fourth proportional to 31,281.61, 46,922.04 and 12,561.31 is: 18,841.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,281.61 : 46,922.04 = 12,561.31 : x
  2. Step 2: Convert to fraction form
    31,281.61/46,922.04 = 12,561.31/x
  3. Step 3: Cross multiply
    31,281.61x = 46,922.04 × 12,561.31
  4. Step 4: Simplify right side
    31,281.61x = 589,402,290.27
  5. Step 5: Solve for x
    x = 589,402,290.27/31,281.61
  6. Step 6: Final answer
    x = 18,841.81

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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.