Home / 13,938.54-19,235.03-7,888.73

Finding the Fourth Proportional to 13,938.54, 19,235.03 and 7,888.73

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Solution

The fourth proportional to 13,938.54, 19,235.03 and 7,888.73 is: 10,886.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.54 : 19,235.03 = 7,888.73 : x
  2. Step 2: Convert to fraction form
    13,938.54/19,235.03 = 7,888.73/x
  3. Step 3: Cross multiply
    13,938.54x = 19,235.03 × 7,888.73
  4. Step 4: Simplify right side
    13,938.54x = 151,739,822.59
  5. Step 5: Solve for x
    x = 151,739,822.59/13,938.54
  6. Step 6: Final answer
    x = 10,886.35

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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.