Home / 28,315.73-39,076.16-15,569.48

Finding the Fourth Proportional to 28,315.73, 39,076.16 and 15,569.48

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Solution

The fourth proportional to 28,315.73, 39,076.16 and 15,569.48 is: 21,486.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,315.73 : 39,076.16 = 15,569.48 : x
  2. Step 2: Convert to fraction form
    28,315.73/39,076.16 = 15,569.48/x
  3. Step 3: Cross multiply
    28,315.73x = 39,076.16 × 15,569.48
  4. Step 4: Simplify right side
    28,315.73x = 608,395,218.37
  5. Step 5: Solve for x
    x = 608,395,218.37/28,315.73
  6. Step 6: Final answer
    x = 21,486.13

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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.