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Finding the Fourth Proportional to 18,430.10, 27,615.48 and 11,031.08

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Solution

The fourth proportional to 18,430.10, 27,615.48 and 11,031.08 is: 16,528.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,430.10 : 27,615.48 = 11,031.08 : x
  2. Step 2: Convert to fraction form
    18,430.10/27,615.48 = 11,031.08/x
  3. Step 3: Cross multiply
    18,430.10x = 27,615.48 × 11,031.08
  4. Step 4: Simplify right side
    18,430.10x = 304,628,569.12
  5. Step 5: Solve for x
    x = 304,628,569.12/18,430.10
  6. Step 6: Final answer
    x = 16,528.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.