Home / 12,720.84-19,086.72-6,151.95

Finding the Fourth Proportional to 12,720.84, 19,086.72 and 6,151.95

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Solution

The fourth proportional to 12,720.84, 19,086.72 and 6,151.95 is: 9,230.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720.84 : 19,086.72 = 6,151.95 : x
  2. Step 2: Convert to fraction form
    12,720.84/19,086.72 = 6,151.95/x
  3. Step 3: Cross multiply
    12,720.84x = 19,086.72 × 6,151.95
  4. Step 4: Simplify right side
    12,720.84x = 117,420,547.10
  5. Step 5: Solve for x
    x = 117,420,547.10/12,720.84
  6. Step 6: Final answer
    x = 9,230.57

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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.