Home / 14,019.12-19,346.16-8,431.20

Finding the Fourth Proportional to 14,019.12, 19,346.16 and 8,431.20

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Solution

The fourth proportional to 14,019.12, 19,346.16 and 8,431.20 is: 11,634.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,019.12 : 19,346.16 = 8,431.20 : x
  2. Step 2: Convert to fraction form
    14,019.12/19,346.16 = 8,431.20/x
  3. Step 3: Cross multiply
    14,019.12x = 19,346.16 × 8,431.20
  4. Step 4: Simplify right side
    14,019.12x = 163,111,344.19
  5. Step 5: Solve for x
    x = 163,111,344.19/14,019.12
  6. Step 6: Final answer
    x = 11,634.92

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.