Home / 28,368.12-39,145.50-16,427.64

Finding the Fourth Proportional to 28,368.12, 39,145.50 and 16,427.64

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Solution

The fourth proportional to 28,368.12, 39,145.50 and 16,427.64 is: 22,668.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,368.12 : 39,145.50 = 16,427.64 : x
  2. Step 2: Convert to fraction form
    28,368.12/39,145.50 = 16,427.64/x
  3. Step 3: Cross multiply
    28,368.12x = 39,145.50 × 16,427.64
  4. Step 4: Simplify right side
    28,368.12x = 643,068,181.62
  5. Step 5: Solve for x
    x = 643,068,181.62/28,368.12
  6. Step 6: Final answer
    x = 22,668.69

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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.