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Finding the Fourth Proportional to 30,058.76, 41,472.84 and 18,730.10

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Solution

The fourth proportional to 30,058.76, 41,472.84 and 18,730.10 is: 25,842.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,058.76 : 41,472.84 = 18,730.10 : x
  2. Step 2: Convert to fraction form
    30,058.76/41,472.84 = 18,730.10/x
  3. Step 3: Cross multiply
    30,058.76x = 41,472.84 × 18,730.10
  4. Step 4: Simplify right side
    30,058.76x = 776,790,614.40
  5. Step 5: Solve for x
    x = 776,790,614.40/30,058.76
  6. Step 6: Final answer
    x = 25,842.40

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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.