Home / 13,142.61-19,714.23-4,378.23

Finding the Fourth Proportional to 13,142.61, 19,714.23 and 4,378.23

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Solution

The fourth proportional to 13,142.61, 19,714.23 and 4,378.23 is: 6,567.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,142.61 : 19,714.23 = 4,378.23 : x
  2. Step 2: Convert to fraction form
    13,142.61/19,714.23 = 4,378.23/x
  3. Step 3: Cross multiply
    13,142.61x = 19,714.23 × 4,378.23
  4. Step 4: Simplify right side
    13,142.61x = 86,313,433.21
  5. Step 5: Solve for x
    x = 86,313,433.21/13,142.61
  6. Step 6: Final answer
    x = 6,567.45

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Half scale
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Double scale
Find fourth proportional to 13,143.61, 19,715.73 and 4,379.23
Similar ratio
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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.