Home / 21,327.80-31,991.70-14,329.40

Finding the Fourth Proportional to 21,327.80, 31,991.70 and 14,329.40

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Solution

The fourth proportional to 21,327.80, 31,991.70 and 14,329.40 is: 21,494.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,327.80 : 31,991.70 = 14,329.40 : x
  2. Step 2: Convert to fraction form
    21,327.80/31,991.70 = 14,329.40/x
  3. Step 3: Cross multiply
    21,327.80x = 31,991.70 × 14,329.40
  4. Step 4: Simplify right side
    21,327.80x = 458,421,865.98
  5. Step 5: Solve for x
    x = 458,421,865.98/21,327.80
  6. Step 6: Final answer
    x = 21,494.10

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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.