Home / 28,316.70-39,079.08-15,741.54

Finding the Fourth Proportional to 28,316.70, 39,079.08 and 15,741.54

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Solution

The fourth proportional to 28,316.70, 39,079.08 and 15,741.54 is: 21,724.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,316.70 : 39,079.08 = 15,741.54 : x
  2. Step 2: Convert to fraction form
    28,316.70/39,079.08 = 15,741.54/x
  3. Step 3: Cross multiply
    28,316.70x = 39,079.08 × 15,741.54
  4. Step 4: Simplify right side
    28,316.70x = 615,164,900.98
  5. Step 5: Solve for x
    x = 615,164,900.98/28,316.70
  6. Step 6: Final answer
    x = 21,724.46

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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.