Home / 28,555.58-39,406.08-15,808.02

Finding the Fourth Proportional to 28,555.58, 39,406.08 and 15,808.02

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Solution

The fourth proportional to 28,555.58, 39,406.08 and 15,808.02 is: 21,814.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,555.58 : 39,406.08 = 15,808.02 : x
  2. Step 2: Convert to fraction form
    28,555.58/39,406.08 = 15,808.02/x
  3. Step 3: Cross multiply
    28,555.58x = 39,406.08 × 15,808.02
  4. Step 4: Simplify right side
    28,555.58x = 622,932,100.76
  5. Step 5: Solve for x
    x = 622,932,100.76/28,555.58
  6. Step 6: Final answer
    x = 21,814.72

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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.