Home / 28,182.43-42,261.19-8,457.21

Finding the Fourth Proportional to 28,182.43, 42,261.19 and 8,457.21

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Solution

The fourth proportional to 28,182.43, 42,261.19 and 8,457.21 is: 12,682.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,182.43 : 42,261.19 = 8,457.21 : x
  2. Step 2: Convert to fraction form
    28,182.43/42,261.19 = 8,457.21/x
  3. Step 3: Cross multiply
    28,182.43x = 42,261.19 × 8,457.21
  4. Step 4: Simplify right side
    28,182.43x = 357,411,505.09
  5. Step 5: Solve for x
    x = 357,411,505.09/28,182.43
  6. Step 6: Final answer
    x = 12,682.07

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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.