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Finding the Fourth Proportional to 21,784,002.80, 32,686,501.80 and 15,380,466.80

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Solution

The fourth proportional to 21,784,002.80, 32,686,501.80 and 15,380,466.80 is: 23,078,111.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,784,002.80 : 32,686,501.80 = 15,380,466.80 : x
  2. Step 2: Convert to fraction form
    21,784,002.80/32,686,501.80 = 15,380,466.80/x
  3. Step 3: Cross multiply
    21,784,002.80x = 32,686,501.80 × 15,380,466.80
  4. Step 4: Simplify right side
    21,784,002.80x = 502,733,655,743,040.25
  5. Step 5: Solve for x
    x = 502,733,655,743,040.25/21,784,002.80
  6. Step 6: Final answer
    x = 23,078,111.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.