Home / 28,409.04-39,205.81-15,833.88

Finding the Fourth Proportional to 28,409.04, 39,205.81 and 15,833.88

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Solution

The fourth proportional to 28,409.04, 39,205.81 and 15,833.88 is: 21,851.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,409.04 : 39,205.81 = 15,833.88 : x
  2. Step 2: Convert to fraction form
    28,409.04/39,205.81 = 15,833.88/x
  3. Step 3: Cross multiply
    28,409.04x = 39,205.81 × 15,833.88
  4. Step 4: Simplify right side
    28,409.04x = 620,780,090.84
  5. Step 5: Solve for x
    x = 620,780,090.84/28,409.04
  6. Step 6: Final answer
    x = 21,851.50

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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.