Home / 20,133.24-30,219.06-12,357.24

Finding the Fourth Proportional to 20,133.24, 30,219.06 and 12,357.24

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Solution

The fourth proportional to 20,133.24, 30,219.06 and 12,357.24 is: 18,547.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,133.24 : 30,219.06 = 12,357.24 : x
  2. Step 2: Convert to fraction form
    20,133.24/30,219.06 = 12,357.24/x
  3. Step 3: Cross multiply
    20,133.24x = 30,219.06 × 12,357.24
  4. Step 4: Simplify right side
    20,133.24x = 373,424,176.99
  5. Step 5: Solve for x
    x = 373,424,176.99/20,133.24
  6. Step 6: Final answer
    x = 18,547.64

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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.