Home / 21,190,026.81-29,240,447.08-12,820,514.88

Finding the Fourth Proportional to 21,190,026.81, 29,240,447.08 and 12,820,514.88

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Solution

The fourth proportional to 21,190,026.81, 29,240,447.08 and 12,820,514.88 is: 17,691,227.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190,026.81 : 29,240,447.08 = 12,820,514.88 : x
  2. Step 2: Convert to fraction form
    21,190,026.81/29,240,447.08 = 12,820,514.88/x
  3. Step 3: Cross multiply
    21,190,026.81x = 29,240,447.08 × 12,820,514.88
  4. Step 4: Simplify right side
    21,190,026.81x = 374,877,586,886,992.56
  5. Step 5: Solve for x
    x = 374,877,586,886,992.56/21,190,026.81
  6. Step 6: Final answer
    x = 17,691,227.59

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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.