Home / 30,646.47-42,296.39-17,218.76

Finding the Fourth Proportional to 30,646.47, 42,296.39 and 17,218.76

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Solution

The fourth proportional to 30,646.47, 42,296.39 and 17,218.76 is: 23,764.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,646.47 : 42,296.39 = 17,218.76 : x
  2. Step 2: Convert to fraction form
    30,646.47/42,296.39 = 17,218.76/x
  3. Step 3: Cross multiply
    30,646.47x = 42,296.39 × 17,218.76
  4. Step 4: Simplify right side
    30,646.47x = 728,291,196.44
  5. Step 5: Solve for x
    x = 728,291,196.44/30,646.47
  6. Step 6: Final answer
    x = 23,764.28

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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.