Home / 12,720.96-19,077.12-8,038.08

Finding the Fourth Proportional to 12,720.96, 19,077.12 and 8,038.08

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Solution

The fourth proportional to 12,720.96, 19,077.12 and 8,038.08 is: 12,054.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720.96 : 19,077.12 = 8,038.08 : x
  2. Step 2: Convert to fraction form
    12,720.96/19,077.12 = 8,038.08/x
  3. Step 3: Cross multiply
    12,720.96x = 19,077.12 × 8,038.08
  4. Step 4: Simplify right side
    12,720.96x = 153,343,416.73
  5. Step 5: Solve for x
    x = 153,343,416.73/12,720.96
  6. Step 6: Final answer
    x = 12,054.39

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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.