Home / 12,921.08-19,376.46-5,528.84

Finding the Fourth Proportional to 12,921.08, 19,376.46 and 5,528.84

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Solution

The fourth proportional to 12,921.08, 19,376.46 and 5,528.84 is: 8,291.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921.08 : 19,376.46 = 5,528.84 : x
  2. Step 2: Convert to fraction form
    12,921.08/19,376.46 = 5,528.84/x
  3. Step 3: Cross multiply
    12,921.08x = 19,376.46 × 5,528.84
  4. Step 4: Simplify right side
    12,921.08x = 107,129,347.11
  5. Step 5: Solve for x
    x = 107,129,347.11/12,921.08
  6. Step 6: Final answer
    x = 8,291.05

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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.