Home / 28,862.70-39,830.40-16,287.45

Finding the Fourth Proportional to 28,862.70, 39,830.40 and 16,287.45

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Solution

The fourth proportional to 28,862.70, 39,830.40 and 16,287.45 is: 22,476.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,862.70 : 39,830.40 = 16,287.45 : x
  2. Step 2: Convert to fraction form
    28,862.70/39,830.40 = 16,287.45/x
  3. Step 3: Cross multiply
    28,862.70x = 39,830.40 × 16,287.45
  4. Step 4: Simplify right side
    28,862.70x = 648,735,648.48
  5. Step 5: Solve for x
    x = 648,735,648.48/28,862.70
  6. Step 6: Final answer
    x = 22,476.61

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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.