Home / 12,885.08-19,330.65-4,120.07

Finding the Fourth Proportional to 12,885.08, 19,330.65 and 4,120.07

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Solution

The fourth proportional to 12,885.08, 19,330.65 and 4,120.07 is: 6,181.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,885.08 : 19,330.65 = 4,120.07 : x
  2. Step 2: Convert to fraction form
    12,885.08/19,330.65 = 4,120.07/x
  3. Step 3: Cross multiply
    12,885.08x = 19,330.65 × 4,120.07
  4. Step 4: Simplify right side
    12,885.08x = 79,643,534.49
  5. Step 5: Solve for x
    x = 79,643,534.49/12,885.08
  6. Step 6: Final answer
    x = 6,181.07

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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.