Home / 13,986.08-20,982.32-4,752.16

Finding the Fourth Proportional to 13,986.08, 20,982.32 and 4,752.16

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Solution

The fourth proportional to 13,986.08, 20,982.32 and 4,752.16 is: 7,129.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.08 : 20,982.32 = 4,752.16 : x
  2. Step 2: Convert to fraction form
    13,986.08/20,982.32 = 4,752.16/x
  3. Step 3: Cross multiply
    13,986.08x = 20,982.32 × 4,752.16
  4. Step 4: Simplify right side
    13,986.08x = 99,711,341.81
  5. Step 5: Solve for x
    x = 99,711,341.81/13,986.08
  6. Step 6: Final answer
    x = 7,129.33

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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.