Home / 38,727.21-58,085.35-12,428.54

Finding the Fourth Proportional to 38,727.21, 58,085.35 and 12,428.54

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Solution

The fourth proportional to 38,727.21, 58,085.35 and 12,428.54 is: 18,641.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,727.21 : 58,085.35 = 12,428.54 : x
  2. Step 2: Convert to fraction form
    38,727.21/58,085.35 = 12,428.54/x
  3. Step 3: Cross multiply
    38,727.21x = 58,085.35 × 12,428.54
  4. Step 4: Simplify right side
    38,727.21x = 721,916,062.12
  5. Step 5: Solve for x
    x = 721,916,062.12/38,727.21
  6. Step 6: Final answer
    x = 18,641.05

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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.