Home / 21,793.46-30,039.04-15,411.81

Finding the Fourth Proportional to 21,793.46, 30,039.04 and 15,411.81

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Solution

The fourth proportional to 21,793.46, 30,039.04 and 15,411.81 is: 21,242.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,793.46 : 30,039.04 = 15,411.81 : x
  2. Step 2: Convert to fraction form
    21,793.46/30,039.04 = 15,411.81/x
  3. Step 3: Cross multiply
    21,793.46x = 30,039.04 × 15,411.81
  4. Step 4: Simplify right side
    21,793.46x = 462,955,938.53
  5. Step 5: Solve for x
    x = 462,955,938.53/21,793.46
  6. Step 6: Final answer
    x = 21,242.88

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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.