Home / 28,182.90-38,893.14-15,436.80

Finding the Fourth Proportional to 28,182.90, 38,893.14 and 15,436.80

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Solution

The fourth proportional to 28,182.90, 38,893.14 and 15,436.80 is: 21,303.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,182.90 : 38,893.14 = 15,436.80 : x
  2. Step 2: Convert to fraction form
    28,182.90/38,893.14 = 15,436.80/x
  3. Step 3: Cross multiply
    28,182.90x = 38,893.14 × 15,436.80
  4. Step 4: Simplify right side
    28,182.90x = 600,385,623.55
  5. Step 5: Solve for x
    x = 600,385,623.55/28,182.90
  6. Step 6: Final answer
    x = 21,303.19

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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.