Home / 28,421.72-39,221.32-16,486.16

Finding the Fourth Proportional to 28,421.72, 39,221.32 and 16,486.16

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Solution

The fourth proportional to 28,421.72, 39,221.32 and 16,486.16 is: 22,750.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,421.72 : 39,221.32 = 16,486.16 : x
  2. Step 2: Convert to fraction form
    28,421.72/39,221.32 = 16,486.16/x
  3. Step 3: Cross multiply
    28,421.72x = 39,221.32 × 16,486.16
  4. Step 4: Simplify right side
    28,421.72x = 646,608,956.93
  5. Step 5: Solve for x
    x = 646,608,956.93/28,421.72
  6. Step 6: Final answer
    x = 22,750.52

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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.