Home / 13,987.96-20,983.36-4,628

Finding the Fourth Proportional to 13,987.96, 20,983.36 and 4,628

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Solution

The fourth proportional to 13,987.96, 20,983.36 and 4,628 is: 6,942.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.96 : 20,983.36 = 4,628 : x
  2. Step 2: Convert to fraction form
    13,987.96/20,983.36 = 4,628/x
  3. Step 3: Cross multiply
    13,987.96x = 20,983.36 × 4,628
  4. Step 4: Simplify right side
    13,987.96x = 97,110,990.08
  5. Step 5: Solve for x
    x = 97,110,990.08/13,987.96
  6. Step 6: Final answer
    x = 6,942.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.