Home / 20,628.81-30,924.27-7,478.01

Finding the Fourth Proportional to 20,628.81, 30,924.27 and 7,478.01

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Solution

The fourth proportional to 20,628.81, 30,924.27 and 7,478.01 is: 11,210.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.81 : 30,924.27 = 7,478.01 : x
  2. Step 2: Convert to fraction form
    20,628.81/30,924.27 = 7,478.01/x
  3. Step 3: Cross multiply
    20,628.81x = 30,924.27 × 7,478.01
  4. Step 4: Simplify right side
    20,628.81x = 231,252,000.30
  5. Step 5: Solve for x
    x = 231,252,000.30/20,628.81
  6. Step 6: Final answer
    x = 11,210.15

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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.