Home / 21,019.20-31,577.40-14,458.20

Finding the Fourth Proportional to 21,019.20, 31,577.40 and 14,458.20

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Solution

The fourth proportional to 21,019.20, 31,577.40 and 14,458.20 is: 21,720.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,019.20 : 31,577.40 = 14,458.20 : x
  2. Step 2: Convert to fraction form
    21,019.20/31,577.40 = 14,458.20/x
  3. Step 3: Cross multiply
    21,019.20x = 31,577.40 × 14,458.20
  4. Step 4: Simplify right side
    21,019.20x = 456,552,364.68
  5. Step 5: Solve for x
    x = 456,552,364.68/21,019.20
  6. Step 6: Final answer
    x = 21,720.73

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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.