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Finding the Fourth Proportional to 29,491.61, 40,699.58 and 16,918.79

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Solution

The fourth proportional to 29,491.61, 40,699.58 and 16,918.79 is: 23,348.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,491.61 : 40,699.58 = 16,918.79 : x
  2. Step 2: Convert to fraction form
    29,491.61/40,699.58 = 16,918.79/x
  3. Step 3: Cross multiply
    29,491.61x = 40,699.58 × 16,918.79
  4. Step 4: Simplify right side
    29,491.61x = 688,587,359.02
  5. Step 5: Solve for x
    x = 688,587,359.02/29,491.61
  6. Step 6: Final answer
    x = 23,348.59

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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.