Home / 12,491.51-18,728.75-4,693.64

Finding the Fourth Proportional to 12,491.51, 18,728.75 and 4,693.64

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Solution

The fourth proportional to 12,491.51, 18,728.75 and 4,693.64 is: 7,037.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,491.51 : 18,728.75 = 4,693.64 : x
  2. Step 2: Convert to fraction form
    12,491.51/18,728.75 = 4,693.64/x
  3. Step 3: Cross multiply
    12,491.51x = 18,728.75 × 4,693.64
  4. Step 4: Simplify right side
    12,491.51x = 87,905,928.24
  5. Step 5: Solve for x
    x = 87,905,928.24/12,491.51
  6. Step 6: Final answer
    x = 7,037.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.