Home / 38,967.12-53,771.78-21,970.49

Finding the Fourth Proportional to 38,967.12, 53,771.78 and 21,970.49

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Solution

The fourth proportional to 38,967.12, 53,771.78 and 21,970.49 is: 30,317.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,967.12 : 53,771.78 = 21,970.49 : x
  2. Step 2: Convert to fraction form
    38,967.12/53,771.78 = 21,970.49/x
  3. Step 3: Cross multiply
    38,967.12x = 53,771.78 × 21,970.49
  4. Step 4: Simplify right side
    38,967.12x = 1,181,392,140.84
  5. Step 5: Solve for x
    x = 1,181,392,140.84/38,967.12
  6. Step 6: Final answer
    x = 30,317.67

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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.