Home / 28,669.95-39,562.28-15,921.92

Finding the Fourth Proportional to 28,669.95, 39,562.28 and 15,921.92

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Solution

The fourth proportional to 28,669.95, 39,562.28 and 15,921.92 is: 21,970.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,669.95 : 39,562.28 = 15,921.92 : x
  2. Step 2: Convert to fraction form
    28,669.95/39,562.28 = 15,921.92/x
  3. Step 3: Cross multiply
    28,669.95x = 39,562.28 × 15,921.92
  4. Step 4: Simplify right side
    28,669.95x = 629,907,179.76
  5. Step 5: Solve for x
    x = 629,907,179.76/28,669.95
  6. Step 6: Final answer
    x = 21,970.99

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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.