Home / 30,297.89-45,400.70-20,804.04

Finding the Fourth Proportional to 30,297.89, 45,400.70 and 20,804.04

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Solution

The fourth proportional to 30,297.89, 45,400.70 and 20,804.04 is: 31,174.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,297.89 : 45,400.70 = 20,804.04 : x
  2. Step 2: Convert to fraction form
    30,297.89/45,400.70 = 20,804.04/x
  3. Step 3: Cross multiply
    30,297.89x = 45,400.70 × 20,804.04
  4. Step 4: Simplify right side
    30,297.89x = 944,518,030.84
  5. Step 5: Solve for x
    x = 944,518,030.84/30,297.89
  6. Step 6: Final answer
    x = 31,174.38

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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.