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Finding the Fourth Proportional to 34,216.80, 47,218.56 and 19,312.80

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Solution

The fourth proportional to 34,216.80, 47,218.56 and 19,312.80 is: 26,651.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,216.80 : 47,218.56 = 19,312.80 : x
  2. Step 2: Convert to fraction form
    34,216.80/47,218.56 = 19,312.80/x
  3. Step 3: Cross multiply
    34,216.80x = 47,218.56 × 19,312.80
  4. Step 4: Simplify right side
    34,216.80x = 911,922,605.57
  5. Step 5: Solve for x
    x = 911,922,605.57/34,216.80
  6. Step 6: Final answer
    x = 26,651.31

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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.