Home / 21,770.80-30,048.64-14,973.89

Finding the Fourth Proportional to 21,770.80, 30,048.64 and 14,973.89

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Solution

The fourth proportional to 21,770.80, 30,048.64 and 14,973.89 is: 20,667.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,770.80 : 30,048.64 = 14,973.89 : x
  2. Step 2: Convert to fraction form
    21,770.80/30,048.64 = 14,973.89/x
  3. Step 3: Cross multiply
    21,770.80x = 30,048.64 × 14,973.89
  4. Step 4: Simplify right side
    21,770.80x = 449,944,842.33
  5. Step 5: Solve for x
    x = 449,944,842.33/21,770.80
  6. Step 6: Final answer
    x = 20,667.36

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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.