Home / 20,905.65-31,361.99-10,376.19

Finding the Fourth Proportional to 20,905.65, 31,361.99 and 10,376.19

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Solution

The fourth proportional to 20,905.65, 31,361.99 and 10,376.19 is: 15,566.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,905.65 : 31,361.99 = 10,376.19 : x
  2. Step 2: Convert to fraction form
    20,905.65/31,361.99 = 10,376.19/x
  3. Step 3: Cross multiply
    20,905.65x = 31,361.99 × 10,376.19
  4. Step 4: Simplify right side
    20,905.65x = 325,417,915.14
  5. Step 5: Solve for x
    x = 325,417,915.14/20,905.65
  6. Step 6: Final answer
    x = 15,566.03

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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.