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Finding the Fourth Proportional to 31,646.80, 47,466.08 and 8,275.04

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Solution

The fourth proportional to 31,646.80, 47,466.08 and 8,275.04 is: 12,411.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,646.80 : 47,466.08 = 8,275.04 : x
  2. Step 2: Convert to fraction form
    31,646.80/47,466.08 = 8,275.04/x
  3. Step 3: Cross multiply
    31,646.80x = 47,466.08 × 8,275.04
  4. Step 4: Simplify right side
    31,646.80x = 392,783,710.64
  5. Step 5: Solve for x
    x = 392,783,710.64/31,646.80
  6. Step 6: Final answer
    x = 12,411.48

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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.