Home / 20,289.12-27,995.64-11,336.16

Finding the Fourth Proportional to 20,289.12, 27,995.64 and 11,336.16

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Solution

The fourth proportional to 20,289.12, 27,995.64 and 11,336.16 is: 15,642.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,289.12 : 27,995.64 = 11,336.16 : x
  2. Step 2: Convert to fraction form
    20,289.12/27,995.64 = 11,336.16/x
  3. Step 3: Cross multiply
    20,289.12x = 27,995.64 × 11,336.16
  4. Step 4: Simplify right side
    20,289.12x = 317,363,054.34
  5. Step 5: Solve for x
    x = 317,363,054.34/20,289.12
  6. Step 6: Final answer
    x = 15,642.03

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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.