Home / 14,017.21-19,343.59-7,643.78

Finding the Fourth Proportional to 14,017.21, 19,343.59 and 7,643.78

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Solution

The fourth proportional to 14,017.21, 19,343.59 and 7,643.78 is: 10,548.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,017.21 : 19,343.59 = 7,643.78 : x
  2. Step 2: Convert to fraction form
    14,017.21/19,343.59 = 7,643.78/x
  3. Step 3: Cross multiply
    14,017.21x = 19,343.59 × 7,643.78
  4. Step 4: Simplify right side
    14,017.21x = 147,858,146.08
  5. Step 5: Solve for x
    x = 147,858,146.08/14,017.21
  6. Step 6: Final answer
    x = 10,548.33

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Half scale
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Double scale
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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.