Home / 21,025.04-28,991.64-14,311.76

Finding the Fourth Proportional to 21,025.04, 28,991.64 and 14,311.76

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Solution

The fourth proportional to 21,025.04, 28,991.64 and 14,311.76 is: 19,734.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,025.04 : 28,991.64 = 14,311.76 : x
  2. Step 2: Convert to fraction form
    21,025.04/28,991.64 = 14,311.76/x
  3. Step 3: Cross multiply
    21,025.04x = 28,991.64 × 14,311.76
  4. Step 4: Simplify right side
    21,025.04x = 414,921,393.69
  5. Step 5: Solve for x
    x = 414,921,393.69/21,025.04
  6. Step 6: Final answer
    x = 19,734.63

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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.