Home / 21,816.46-30,108.27-12,385.63

Finding the Fourth Proportional to 21,816.46, 30,108.27 and 12,385.63

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Solution

The fourth proportional to 21,816.46, 30,108.27 and 12,385.63 is: 17,093.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,816.46 : 30,108.27 = 12,385.63 : x
  2. Step 2: Convert to fraction form
    21,816.46/30,108.27 = 12,385.63/x
  3. Step 3: Cross multiply
    21,816.46x = 30,108.27 × 12,385.63
  4. Step 4: Simplify right side
    21,816.46x = 372,909,892.16
  5. Step 5: Solve for x
    x = 372,909,892.16/21,816.46
  6. Step 6: Final answer
    x = 17,093.05

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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.