Home / 13,955.77-19,258.93-7,987.56

Finding the Fourth Proportional to 13,955.77, 19,258.93 and 7,987.56

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Solution

The fourth proportional to 13,955.77, 19,258.93 and 7,987.56 is: 11,022.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,955.77 : 19,258.93 = 7,987.56 : x
  2. Step 2: Convert to fraction form
    13,955.77/19,258.93 = 7,987.56/x
  3. Step 3: Cross multiply
    13,955.77x = 19,258.93 × 7,987.56
  4. Step 4: Simplify right side
    13,955.77x = 153,831,858.91
  5. Step 5: Solve for x
    x = 153,831,858.91/13,955.77
  6. Step 6: Final answer
    x = 11,022.81

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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.