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Finding the Fourth Proportional to 30,207, 41,688.92 and 18,276.91

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Solution

The fourth proportional to 30,207, 41,688.92 and 18,276.91 is: 25,224.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,207 : 41,688.92 = 18,276.91 : x
  2. Step 2: Convert to fraction form
    30,207/41,688.92 = 18,276.91/x
  3. Step 3: Cross multiply
    30,207x = 41,688.92 × 18,276.91
  4. Step 4: Simplify right side
    30,207x = 761,944,638.84
  5. Step 5: Solve for x
    x = 761,944,638.84/30,207
  6. Step 6: Final answer
    x = 25,224.11

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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.