Home / 30,145.93-45,187.84-20,288.03

Finding the Fourth Proportional to 30,145.93, 45,187.84 and 20,288.03

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Solution

The fourth proportional to 30,145.93, 45,187.84 and 20,288.03 is: 30,411.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,145.93 : 45,187.84 = 20,288.03 : x
  2. Step 2: Convert to fraction form
    30,145.93/45,187.84 = 20,288.03/x
  3. Step 3: Cross multiply
    30,145.93x = 45,187.84 × 20,288.03
  4. Step 4: Simplify right side
    30,145.93x = 916,772,052.98
  5. Step 5: Solve for x
    x = 916,772,052.98/30,145.93
  6. Step 6: Final answer
    x = 30,411.14

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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.