Home / 28,213.08-42,312.72-8,486.28

Finding the Fourth Proportional to 28,213.08, 42,312.72 and 8,486.28

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Solution

The fourth proportional to 28,213.08, 42,312.72 and 8,486.28 is: 12,727.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,213.08 : 42,312.72 = 8,486.28 : x
  2. Step 2: Convert to fraction form
    28,213.08/42,312.72 = 8,486.28/x
  3. Step 3: Cross multiply
    28,213.08x = 42,312.72 × 8,486.28
  4. Step 4: Simplify right side
    28,213.08x = 359,077,589.48
  5. Step 5: Solve for x
    x = 359,077,589.48/28,213.08
  6. Step 6: Final answer
    x = 12,727.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.