Home / 28,664.55-39,555.95-15,918.39

Finding the Fourth Proportional to 28,664.55, 39,555.95 and 15,918.39

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Solution

The fourth proportional to 28,664.55, 39,555.95 and 15,918.39 is: 21,966.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,664.55 : 39,555.95 = 15,918.39 : x
  2. Step 2: Convert to fraction form
    28,664.55/39,555.95 = 15,918.39/x
  3. Step 3: Cross multiply
    28,664.55x = 39,555.95 × 15,918.39
  4. Step 4: Simplify right side
    28,664.55x = 629,666,959.33
  5. Step 5: Solve for x
    x = 629,666,959.33/28,664.55
  6. Step 6: Final answer
    x = 21,966.75

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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.