Home / 28,612.76-39,486.08-15,866.48

Finding the Fourth Proportional to 28,612.76, 39,486.08 and 15,866.48

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Solution

The fourth proportional to 28,612.76, 39,486.08 and 15,866.48 is: 21,896.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,612.76 : 39,486.08 = 15,866.48 : x
  2. Step 2: Convert to fraction form
    28,612.76/39,486.08 = 15,866.48/x
  3. Step 3: Cross multiply
    28,612.76x = 39,486.08 × 15,866.48
  4. Step 4: Simplify right side
    28,612.76x = 626,505,236.98
  5. Step 5: Solve for x
    x = 626,505,236.98/28,612.76
  6. Step 6: Final answer
    x = 21,896.01

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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.