Home / 13,756.29-18,984.86-7,789.01

Finding the Fourth Proportional to 13,756.29, 18,984.86 and 7,789.01

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Solution

The fourth proportional to 13,756.29, 18,984.86 and 7,789.01 is: 10,749.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.29 : 18,984.86 = 7,789.01 : x
  2. Step 2: Convert to fraction form
    13,756.29/18,984.86 = 7,789.01/x
  3. Step 3: Cross multiply
    13,756.29x = 18,984.86 × 7,789.01
  4. Step 4: Simplify right side
    13,756.29x = 147,873,225.44
  5. Step 5: Solve for x
    x = 147,873,225.44/13,756.29
  6. Step 6: Final answer
    x = 10,749.50

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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.