Home / 12,720.06-19,077.90-3,360.18

Finding the Fourth Proportional to 12,720.06, 19,077.90 and 3,360.18

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Solution

The fourth proportional to 12,720.06, 19,077.90 and 3,360.18 is: 5,039.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720.06 : 19,077.90 = 3,360.18 : x
  2. Step 2: Convert to fraction form
    12,720.06/19,077.90 = 3,360.18/x
  3. Step 3: Cross multiply
    12,720.06x = 19,077.90 × 3,360.18
  4. Step 4: Simplify right side
    12,720.06x = 64,105,178.02
  5. Step 5: Solve for x
    x = 64,105,178.02/12,720.06
  6. Step 6: Final answer
    x = 5,039.69

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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.