Home / 30,570.67-42,189.28-17,140.87

Finding the Fourth Proportional to 30,570.67, 42,189.28 and 17,140.87

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Solution

The fourth proportional to 30,570.67, 42,189.28 and 17,140.87 is: 23,655.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,570.67 : 42,189.28 = 17,140.87 : x
  2. Step 2: Convert to fraction form
    30,570.67/42,189.28 = 17,140.87/x
  3. Step 3: Cross multiply
    30,570.67x = 42,189.28 × 17,140.87
  4. Step 4: Simplify right side
    30,570.67x = 723,160,918.14
  5. Step 5: Solve for x
    x = 723,160,918.14/30,570.67
  6. Step 6: Final answer
    x = 23,655.38

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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.