Home / 13,215.08-19,783.74-8,821.64

Finding the Fourth Proportional to 13,215.08, 19,783.74 and 8,821.64

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Solution

The fourth proportional to 13,215.08, 19,783.74 and 8,821.64 is: 13,206.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.08 : 19,783.74 = 8,821.64 : x
  2. Step 2: Convert to fraction form
    13,215.08/19,783.74 = 8,821.64/x
  3. Step 3: Cross multiply
    13,215.08x = 19,783.74 × 8,821.64
  4. Step 4: Simplify right side
    13,215.08x = 174,524,988.03
  5. Step 5: Solve for x
    x = 174,524,988.03/13,215.08
  6. Step 6: Final answer
    x = 13,206.50

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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.