Home / 31,726.80-47,590.20-8,355.60

Finding the Fourth Proportional to 31,726.80, 47,590.20 and 8,355.60

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Solution

The fourth proportional to 31,726.80, 47,590.20 and 8,355.60 is: 12,533.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,726.80 : 47,590.20 = 8,355.60 : x
  2. Step 2: Convert to fraction form
    31,726.80/47,590.20 = 8,355.60/x
  3. Step 3: Cross multiply
    31,726.80x = 47,590.20 × 8,355.60
  4. Step 4: Simplify right side
    31,726.80x = 397,644,675.12
  5. Step 5: Solve for x
    x = 397,644,675.12/31,726.80
  6. Step 6: Final answer
    x = 12,533.40

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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.