Home / 28,556.64-39,407.31-15,810.34

Finding the Fourth Proportional to 28,556.64, 39,407.31 and 15,810.34

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Solution

The fourth proportional to 28,556.64, 39,407.31 and 15,810.34 is: 21,817.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,556.64 : 39,407.31 = 15,810.34 : x
  2. Step 2: Convert to fraction form
    28,556.64/39,407.31 = 15,810.34/x
  3. Step 3: Cross multiply
    28,556.64x = 39,407.31 × 15,810.34
  4. Step 4: Simplify right side
    28,556.64x = 623,042,969.59
  5. Step 5: Solve for x
    x = 623,042,969.59/28,556.64
  6. Step 6: Final answer
    x = 21,817.80

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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.