Home / 12,210.56-18,315.76-4,419.36

Finding the Fourth Proportional to 12,210.56, 18,315.76 and 4,419.36

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Solution

The fourth proportional to 12,210.56, 18,315.76 and 4,419.36 is: 6,629.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.56 : 18,315.76 = 4,419.36 : x
  2. Step 2: Convert to fraction form
    12,210.56/18,315.76 = 4,419.36/x
  3. Step 3: Cross multiply
    12,210.56x = 18,315.76 × 4,419.36
  4. Step 4: Simplify right side
    12,210.56x = 80,943,937.11
  5. Step 5: Solve for x
    x = 80,943,937.11/12,210.56
  6. Step 6: Final answer
    x = 6,629.01

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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.