Home / 13,077.99-18,041.67-7,769.79

Finding the Fourth Proportional to 13,077.99, 18,041.67 and 7,769.79

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Solution

The fourth proportional to 13,077.99, 18,041.67 and 7,769.79 is: 10,718.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,077.99 : 18,041.67 = 7,769.79 : x
  2. Step 2: Convert to fraction form
    13,077.99/18,041.67 = 7,769.79/x
  3. Step 3: Cross multiply
    13,077.99x = 18,041.67 × 7,769.79
  4. Step 4: Simplify right side
    13,077.99x = 140,179,987.15
  5. Step 5: Solve for x
    x = 140,179,987.15/13,077.99
  6. Step 6: Final answer
    x = 10,718.77

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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.