Home / 12,646.81-18,966.12-4,211.07

Finding the Fourth Proportional to 12,646.81, 18,966.12 and 4,211.07

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Solution

The fourth proportional to 12,646.81, 18,966.12 and 4,211.07 is: 6,315.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,646.81 : 18,966.12 = 4,211.07 : x
  2. Step 2: Convert to fraction form
    12,646.81/18,966.12 = 4,211.07/x
  3. Step 3: Cross multiply
    12,646.81x = 18,966.12 × 4,211.07
  4. Step 4: Simplify right side
    12,646.81x = 79,867,658.95
  5. Step 5: Solve for x
    x = 79,867,658.95/12,646.81
  6. Step 6: Final answer
    x = 6,315.24

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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.