Home / 28,135.95-38,822.00-15,558.27

Finding the Fourth Proportional to 28,135.95, 38,822.00 and 15,558.27

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Solution

The fourth proportional to 28,135.95, 38,822.00 and 15,558.27 is: 21,467.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,135.95 : 38,822.00 = 15,558.27 : x
  2. Step 2: Convert to fraction form
    28,135.95/38,822.00 = 15,558.27/x
  3. Step 3: Cross multiply
    28,135.95x = 38,822.00 × 15,558.27
  4. Step 4: Simplify right side
    28,135.95x = 604,003,080.15
  5. Step 5: Solve for x
    x = 604,003,080.15/28,135.95
  6. Step 6: Final answer
    x = 21,467.31

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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.