Home / 28,897.26-39,878.20-15,649.26

Finding the Fourth Proportional to 28,897.26, 39,878.20 and 15,649.26

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Solution

The fourth proportional to 28,897.26, 39,878.20 and 15,649.26 is: 21,595.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,897.26 : 39,878.20 = 15,649.26 : x
  2. Step 2: Convert to fraction form
    28,897.26/39,878.20 = 15,649.26/x
  3. Step 3: Cross multiply
    28,897.26x = 39,878.20 × 15,649.26
  4. Step 4: Simplify right side
    28,897.26x = 624,064,320.13
  5. Step 5: Solve for x
    x = 624,064,320.13/28,897.26
  6. Step 6: Final answer
    x = 21,595.97

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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.