Home / 30,838.06-42,514.20-19,501.90

Finding the Fourth Proportional to 30,838.06, 42,514.20 and 19,501.90

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Solution

The fourth proportional to 30,838.06, 42,514.20 and 19,501.90 is: 26,885.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,838.06 : 42,514.20 = 19,501.90 : x
  2. Step 2: Convert to fraction form
    30,838.06/42,514.20 = 19,501.90/x
  3. Step 3: Cross multiply
    30,838.06x = 42,514.20 × 19,501.90
  4. Step 4: Simplify right side
    30,838.06x = 829,107,676.98
  5. Step 5: Solve for x
    x = 829,107,676.98/30,838.06
  6. Step 6: Final answer
    x = 26,885.86

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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.