Home / 21,678,839.18-29,914,642.11-12,514,434.38

Finding the Fourth Proportional to 21,678,839.18, 29,914,642.11 and 12,514,434.38

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Solution

The fourth proportional to 21,678,839.18, 29,914,642.11 and 12,514,434.38 is: 17,268,674.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,678,839.18 : 29,914,642.11 = 12,514,434.38 : x
  2. Step 2: Convert to fraction form
    21,678,839.18/29,914,642.11 = 12,514,434.38/x
  3. Step 3: Cross multiply
    21,678,839.18x = 29,914,642.11 × 12,514,434.38
  4. Step 4: Simplify right side
    21,678,839.18x = 374,364,825,686,779.75
  5. Step 5: Solve for x
    x = 374,364,825,686,779.75/21,678,839.18
  6. Step 6: Final answer
    x = 17,268,674.89

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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.