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Finding the Fourth Proportional to 29,580.59, 40,798.08 and 18,971.21

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Solution

The fourth proportional to 29,580.59, 40,798.08 and 18,971.21 is: 26,165.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,580.59 : 40,798.08 = 18,971.21 : x
  2. Step 2: Convert to fraction form
    29,580.59/40,798.08 = 18,971.21/x
  3. Step 3: Cross multiply
    29,580.59x = 40,798.08 × 18,971.21
  4. Step 4: Simplify right side
    29,580.59x = 773,989,045.27
  5. Step 5: Solve for x
    x = 773,989,045.27/29,580.59
  6. Step 6: Final answer
    x = 26,165.43

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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.