Home / 34,438.80-47,514.20-21,005.22

Finding the Fourth Proportional to 34,438.80, 47,514.20 and 21,005.22

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Solution

The fourth proportional to 34,438.80, 47,514.20 and 21,005.22 is: 28,980.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,438.80 : 47,514.20 = 21,005.22 : x
  2. Step 2: Convert to fraction form
    34,438.80/47,514.20 = 21,005.22/x
  3. Step 3: Cross multiply
    34,438.80x = 47,514.20 × 21,005.22
  4. Step 4: Simplify right side
    34,438.80x = 998,046,224.12
  5. Step 5: Solve for x
    x = 998,046,224.12/34,438.80
  6. Step 6: Final answer
    x = 28,980.28

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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.