Home / 12,885.81-19,329.93-4,118.64

Finding the Fourth Proportional to 12,885.81, 19,329.93 and 4,118.64

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Solution

The fourth proportional to 12,885.81, 19,329.93 and 4,118.64 is: 6,178.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,885.81 : 19,329.93 = 4,118.64 : x
  2. Step 2: Convert to fraction form
    12,885.81/19,329.93 = 4,118.64/x
  3. Step 3: Cross multiply
    12,885.81x = 19,329.93 × 4,118.64
  4. Step 4: Simplify right side
    12,885.81x = 79,613,022.90
  5. Step 5: Solve for x
    x = 79,613,022.90/12,885.81
  6. Step 6: Final answer
    x = 6,178.35

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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.