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Finding the Fourth Proportional to 29,483.78, 40,690.86 and 18,151.00

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Solution

The fourth proportional to 29,483.78, 40,690.86 and 18,151.00 is: 25,050.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,483.78 : 40,690.86 = 18,151.00 : x
  2. Step 2: Convert to fraction form
    29,483.78/40,690.86 = 18,151.00/x
  3. Step 3: Cross multiply
    29,483.78x = 40,690.86 × 18,151.00
  4. Step 4: Simplify right side
    29,483.78x = 738,579,630.07
  5. Step 5: Solve for x
    x = 738,579,630.07/29,483.78
  6. Step 6: Final answer
    x = 25,050.38

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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.