Home / 28,236.01-38,970.35-15,664.81

Finding the Fourth Proportional to 28,236.01, 38,970.35 and 15,664.81

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Solution

The fourth proportional to 28,236.01, 38,970.35 and 15,664.81 is: 21,620.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,236.01 : 38,970.35 = 15,664.81 : x
  2. Step 2: Convert to fraction form
    28,236.01/38,970.35 = 15,664.81/x
  3. Step 3: Cross multiply
    28,236.01x = 38,970.35 × 15,664.81
  4. Step 4: Simplify right side
    28,236.01x = 610,462,972.69
  5. Step 5: Solve for x
    x = 610,462,972.69/28,236.01
  6. Step 6: Final answer
    x = 21,620.02

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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.