Home / 10,103.63-13,931.87-6,917.45

Finding the Fourth Proportional to 10,103.63, 13,931.87 and 6,917.45

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Solution

The fourth proportional to 10,103.63, 13,931.87 and 6,917.45 is: 9,538.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,103.63 : 13,931.87 = 6,917.45 : x
  2. Step 2: Convert to fraction form
    10,103.63/13,931.87 = 6,917.45/x
  3. Step 3: Cross multiply
    10,103.63x = 13,931.87 × 6,917.45
  4. Step 4: Simplify right side
    10,103.63x = 96,372,979.54
  5. Step 5: Solve for x
    x = 96,372,979.54/10,103.63
  6. Step 6: Final answer
    x = 9,538.45

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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.