Home / 13,955.52-19,258.28-7,986.80

Finding the Fourth Proportional to 13,955.52, 19,258.28 and 7,986.80

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Solution

The fourth proportional to 13,955.52, 19,258.28 and 7,986.80 is: 11,021.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,955.52 : 19,258.28 = 7,986.80 : x
  2. Step 2: Convert to fraction form
    13,955.52/19,258.28 = 7,986.80/x
  3. Step 3: Cross multiply
    13,955.52x = 19,258.28 × 7,986.80
  4. Step 4: Simplify right side
    13,955.52x = 153,811,894.48
  5. Step 5: Solve for x
    x = 153,811,894.48/13,955.52
  6. Step 6: Final answer
    x = 11,021.58

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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.