Home / 30,857.47-42,583.33-17,428.75

Finding the Fourth Proportional to 30,857.47, 42,583.33 and 17,428.75

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Solution

The fourth proportional to 30,857.47, 42,583.33 and 17,428.75 is: 24,051.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,857.47 : 42,583.33 = 17,428.75 : x
  2. Step 2: Convert to fraction form
    30,857.47/42,583.33 = 17,428.75/x
  3. Step 3: Cross multiply
    30,857.47x = 42,583.33 × 17,428.75
  4. Step 4: Simplify right side
    30,857.47x = 742,174,212.74
  5. Step 5: Solve for x
    x = 742,174,212.74/30,857.47
  6. Step 6: Final answer
    x = 24,051.69

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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.