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Finding the Fourth Proportional to 13,235.62, 19,810.84 and 6,986.74

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Solution

The fourth proportional to 13,235.62, 19,810.84 and 6,986.74 is: 10,457.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,235.62 : 19,810.84 = 6,986.74 : x
  2. Step 2: Convert to fraction form
    13,235.62/19,810.84 = 6,986.74/x
  3. Step 3: Cross multiply
    13,235.62x = 19,810.84 × 6,986.74
  4. Step 4: Simplify right side
    13,235.62x = 138,413,188.26
  5. Step 5: Solve for x
    x = 138,413,188.26/13,235.62
  6. Step 6: Final answer
    x = 10,457.63

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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.