Home / 13,556.37-18,707.45-7,587.75

Finding the Fourth Proportional to 13,556.37, 18,707.45 and 7,587.75

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Solution

The fourth proportional to 13,556.37, 18,707.45 and 7,587.75 is: 10,470.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,556.37 : 18,707.45 = 7,587.75 : x
  2. Step 2: Convert to fraction form
    13,556.37/18,707.45 = 7,587.75/x
  3. Step 3: Cross multiply
    13,556.37x = 18,707.45 × 7,587.75
  4. Step 4: Simplify right side
    13,556.37x = 141,947,415.80
  5. Step 5: Solve for x
    x = 141,947,415.80/13,556.37
  6. Step 6: Final answer
    x = 10,470.90

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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.