Home / 30,537.81-42,129.99-17,789.09

Finding the Fourth Proportional to 30,537.81, 42,129.99 and 17,789.09

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Solution

The fourth proportional to 30,537.81, 42,129.99 and 17,789.09 is: 24,541.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,537.81 : 42,129.99 = 17,789.09 : x
  2. Step 2: Convert to fraction form
    30,537.81/42,129.99 = 17,789.09/x
  3. Step 3: Cross multiply
    30,537.81x = 42,129.99 × 17,789.09
  4. Step 4: Simplify right side
    30,537.81x = 749,453,973.16
  5. Step 5: Solve for x
    x = 749,453,973.16/30,537.81
  6. Step 6: Final answer
    x = 24,541.84

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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.