Home / 28,090.74-42,142.19-8,370.88

Finding the Fourth Proportional to 28,090.74, 42,142.19 and 8,370.88

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Solution

The fourth proportional to 28,090.74, 42,142.19 and 8,370.88 is: 12,558.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,090.74 : 42,142.19 = 8,370.88 : x
  2. Step 2: Convert to fraction form
    28,090.74/42,142.19 = 8,370.88/x
  3. Step 3: Cross multiply
    28,090.74x = 42,142.19 × 8,370.88
  4. Step 4: Simplify right side
    28,090.74x = 352,767,215.43
  5. Step 5: Solve for x
    x = 352,767,215.43/28,090.74
  6. Step 6: Final answer
    x = 12,558.13

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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.