Home / 13,120.92-19,670.40-6,538.05

Finding the Fourth Proportional to 13,120.92, 19,670.40 and 6,538.05

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Solution

The fourth proportional to 13,120.92, 19,670.40 and 6,538.05 is: 9,801.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120.92 : 19,670.40 = 6,538.05 : x
  2. Step 2: Convert to fraction form
    13,120.92/19,670.40 = 6,538.05/x
  3. Step 3: Cross multiply
    13,120.92x = 19,670.40 × 6,538.05
  4. Step 4: Simplify right side
    13,120.92x = 128,606,058.72
  5. Step 5: Solve for x
    x = 128,606,058.72/13,120.92
  6. Step 6: Final answer
    x = 9,801.60

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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.