Home / 20,973.90-31,460.81-14,380.09

Finding the Fourth Proportional to 20,973.90, 31,460.81 and 14,380.09

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Solution

The fourth proportional to 20,973.90, 31,460.81 and 14,380.09 is: 21,570.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,973.90 : 31,460.81 = 14,380.09 : x
  2. Step 2: Convert to fraction form
    20,973.90/31,460.81 = 14,380.09/x
  3. Step 3: Cross multiply
    20,973.90x = 31,460.81 × 14,380.09
  4. Step 4: Simplify right side
    20,973.90x = 452,409,393.88
  5. Step 5: Solve for x
    x = 452,409,393.88/20,973.90
  6. Step 6: Final answer
    x = 21,570.12

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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.