Home / 28,343.34-39,112.74-15,768.90

Finding the Fourth Proportional to 28,343.34, 39,112.74 and 15,768.90

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Solution

The fourth proportional to 28,343.34, 39,112.74 and 15,768.90 is: 21,760.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,343.34 : 39,112.74 = 15,768.90 : x
  2. Step 2: Convert to fraction form
    28,343.34/39,112.74 = 15,768.90/x
  3. Step 3: Cross multiply
    28,343.34x = 39,112.74 × 15,768.90
  4. Step 4: Simplify right side
    28,343.34x = 616,764,885.79
  5. Step 5: Solve for x
    x = 616,764,885.79/28,343.34
  6. Step 6: Final answer
    x = 21,760.49

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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.