Home / 28,926.46-39,911.20-16,987.47

Finding the Fourth Proportional to 28,926.46, 39,911.20 and 16,987.47

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Solution

The fourth proportional to 28,926.46, 39,911.20 and 16,987.47 is: 23,438.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,926.46 : 39,911.20 = 16,987.47 : x
  2. Step 2: Convert to fraction form
    28,926.46/39,911.20 = 16,987.47/x
  3. Step 3: Cross multiply
    28,926.46x = 39,911.20 × 16,987.47
  4. Step 4: Simplify right side
    28,926.46x = 677,990,312.66
  5. Step 5: Solve for x
    x = 677,990,312.66/28,926.46
  6. Step 6: Final answer
    x = 23,438.41

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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.