Home / 21,885,770.09-30,186,699.00-15,360,855.59

Finding the Fourth Proportional to 21,885,770.09, 30,186,699.00 and 15,360,855.59

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Solution

The fourth proportional to 21,885,770.09, 30,186,699.00 and 15,360,855.59 is: 21,186,986.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,885,770.09 : 30,186,699.00 = 15,360,855.59 : x
  2. Step 2: Convert to fraction form
    21,885,770.09/30,186,699.00 = 15,360,855.59/x
  3. Step 3: Cross multiply
    21,885,770.09x = 30,186,699.00 × 15,360,855.59
  4. Step 4: Simplify right side
    21,885,770.09x = 463,693,524,095,660.94
  5. Step 5: Solve for x
    x = 463,693,524,095,660.94/21,885,770.09
  6. Step 6: Final answer
    x = 21,186,986.89

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Double scale
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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.