Home / 13,979.86-19,291.76-7,692.22

Finding the Fourth Proportional to 13,979.86, 19,291.76 and 7,692.22

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Solution

The fourth proportional to 13,979.86, 19,291.76 and 7,692.22 is: 10,615.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.86 : 19,291.76 = 7,692.22 : x
  2. Step 2: Convert to fraction form
    13,979.86/19,291.76 = 7,692.22/x
  3. Step 3: Cross multiply
    13,979.86x = 19,291.76 × 7,692.22
  4. Step 4: Simplify right side
    13,979.86x = 148,396,462.11
  5. Step 5: Solve for x
    x = 148,396,462.11/13,979.86
  6. Step 6: Final answer
    x = 10,615.02

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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.