Home / 11,425.43-15,768.56-6,389.93

Finding the Fourth Proportional to 11,425.43, 15,768.56 and 6,389.93

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Solution

The fourth proportional to 11,425.43, 15,768.56 and 6,389.93 is: 8,818.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,425.43 : 15,768.56 = 6,389.93 : x
  2. Step 2: Convert to fraction form
    11,425.43/15,768.56 = 6,389.93/x
  3. Step 3: Cross multiply
    11,425.43x = 15,768.56 × 6,389.93
  4. Step 4: Simplify right side
    11,425.43x = 100,759,883.81
  5. Step 5: Solve for x
    x = 100,759,883.81/11,425.43
  6. Step 6: Final answer
    x = 8,818.92

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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.