Home / 13,867.81-19,137.55-7,899.48

Finding the Fourth Proportional to 13,867.81, 19,137.55 and 7,899.48

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Solution

The fourth proportional to 13,867.81, 19,137.55 and 7,899.48 is: 10,901.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,867.81 : 19,137.55 = 7,899.48 : x
  2. Step 2: Convert to fraction form
    13,867.81/19,137.55 = 7,899.48/x
  3. Step 3: Cross multiply
    13,867.81x = 19,137.55 × 7,899.48
  4. Step 4: Simplify right side
    13,867.81x = 151,176,693.47
  5. Step 5: Solve for x
    x = 151,176,693.47/13,867.81
  6. Step 6: Final answer
    x = 10,901.27

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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.