Home / 28,568.72-39,421.14-15,993.47

Finding the Fourth Proportional to 28,568.72, 39,421.14 and 15,993.47

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Solution

The fourth proportional to 28,568.72, 39,421.14 and 15,993.47 is: 22,068.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,568.72 : 39,421.14 = 15,993.47 : x
  2. Step 2: Convert to fraction form
    28,568.72/39,421.14 = 15,993.47/x
  3. Step 3: Cross multiply
    28,568.72x = 39,421.14 × 15,993.47
  4. Step 4: Simplify right side
    28,568.72x = 630,480,819.96
  5. Step 5: Solve for x
    x = 630,480,819.96/28,568.72
  6. Step 6: Final answer
    x = 22,068.92

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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.