Home / 12,541.28-18,814.81-4,221.08

Finding the Fourth Proportional to 12,541.28, 18,814.81 and 4,221.08

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Solution

The fourth proportional to 12,541.28, 18,814.81 and 4,221.08 is: 6,332.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,541.28 : 18,814.81 = 4,221.08 : x
  2. Step 2: Convert to fraction form
    12,541.28/18,814.81 = 4,221.08/x
  3. Step 3: Cross multiply
    12,541.28x = 18,814.81 × 4,221.08
  4. Step 4: Simplify right side
    12,541.28x = 79,418,703.02
  5. Step 5: Solve for x
    x = 79,418,703.02/12,541.28
  6. Step 6: Final answer
    x = 6,332.59

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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.