Home / 13,956.00-19,258.75-7,987.51

Finding the Fourth Proportional to 13,956.00, 19,258.75 and 7,987.51

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Solution

The fourth proportional to 13,956.00, 19,258.75 and 7,987.51 is: 11,022.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,956.00 : 19,258.75 = 7,987.51 : x
  2. Step 2: Convert to fraction form
    13,956.00/19,258.75 = 7,987.51/x
  3. Step 3: Cross multiply
    13,956.00x = 19,258.75 × 7,987.51
  4. Step 4: Simplify right side
    13,956.00x = 153,829,458.21
  5. Step 5: Solve for x
    x = 153,829,458.21/13,956.00
  6. Step 6: Final answer
    x = 11,022.46

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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.