Home / 28,254.19-38,992.60-15,678.94

Finding the Fourth Proportional to 28,254.19, 38,992.60 and 15,678.94

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Solution

The fourth proportional to 28,254.19, 38,992.60 and 15,678.94 is: 21,637.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,254.19 : 38,992.60 = 15,678.94 : x
  2. Step 2: Convert to fraction form
    28,254.19/38,992.60 = 15,678.94/x
  3. Step 3: Cross multiply
    28,254.19x = 38,992.60 × 15,678.94
  4. Step 4: Simplify right side
    28,254.19x = 611,362,577.56
  5. Step 5: Solve for x
    x = 611,362,577.56/28,254.19
  6. Step 6: Final answer
    x = 21,637.95

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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.