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Finding the Fourth Proportional to 31,674.04, 47,493.54 and 21,690.20

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Solution

The fourth proportional to 31,674.04, 47,493.54 and 21,690.20 is: 32,523.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,674.04 : 47,493.54 = 21,690.20 : x
  2. Step 2: Convert to fraction form
    31,674.04/47,493.54 = 21,690.20/x
  3. Step 3: Cross multiply
    31,674.04x = 47,493.54 × 21,690.20
  4. Step 4: Simplify right side
    31,674.04x = 1,030,144,381.31
  5. Step 5: Solve for x
    x = 1,030,144,381.31/31,674.04
  6. Step 6: Final answer
    x = 32,523.30

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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.