Home / 28,034.10-38,686.82-15,287.54

Finding the Fourth Proportional to 28,034.10, 38,686.82 and 15,287.54

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Solution

The fourth proportional to 28,034.10, 38,686.82 and 15,287.54 is: 21,096.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,034.10 : 38,686.82 = 15,287.54 : x
  2. Step 2: Convert to fraction form
    28,034.10/38,686.82 = 15,287.54/x
  3. Step 3: Cross multiply
    28,034.10x = 38,686.82 × 15,287.54
  4. Step 4: Simplify right side
    28,034.10x = 591,426,038.35
  5. Step 5: Solve for x
    x = 591,426,038.35/28,034.10
  6. Step 6: Final answer
    x = 21,096.67

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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.