Home / 28,813.81-39,766.96-16,881.91

Finding the Fourth Proportional to 28,813.81, 39,766.96 and 16,881.91

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Solution

The fourth proportional to 28,813.81, 39,766.96 and 16,881.91 is: 23,299.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,813.81 : 39,766.96 = 16,881.91 : x
  2. Step 2: Convert to fraction form
    28,813.81/39,766.96 = 16,881.91/x
  3. Step 3: Cross multiply
    28,813.81x = 39,766.96 × 16,881.91
  4. Step 4: Simplify right side
    28,813.81x = 671,342,239.69
  5. Step 5: Solve for x
    x = 671,342,239.69/28,813.81
  6. Step 6: Final answer
    x = 23,299.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.