Home / 28,315.67-39,076.07-15,569.41

Finding the Fourth Proportional to 28,315.67, 39,076.07 and 15,569.41

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Solution

The fourth proportional to 28,315.67, 39,076.07 and 15,569.41 is: 21,486.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,315.67 : 39,076.07 = 15,569.41 : x
  2. Step 2: Convert to fraction form
    28,315.67/39,076.07 = 15,569.41/x
  3. Step 3: Cross multiply
    28,315.67x = 39,076.07 × 15,569.41
  4. Step 4: Simplify right side
    28,315.67x = 608,391,355.02
  5. Step 5: Solve for x
    x = 608,391,355.02/28,315.67
  6. Step 6: Final answer
    x = 21,486.03

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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.