Home / 28,614.86-39,490.82-15,872.03

Finding the Fourth Proportional to 28,614.86, 39,490.82 and 15,872.03

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Solution

The fourth proportional to 28,614.86, 39,490.82 and 15,872.03 is: 21,904.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,614.86 : 39,490.82 = 15,872.03 : x
  2. Step 2: Convert to fraction form
    28,614.86/39,490.82 = 15,872.03/x
  3. Step 3: Cross multiply
    28,614.86x = 39,490.82 × 15,872.03
  4. Step 4: Simplify right side
    28,614.86x = 626,799,479.76
  5. Step 5: Solve for x
    x = 626,799,479.76/28,614.86
  6. Step 6: Final answer
    x = 21,904.68

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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.