Home / 21,047,713.40-31,565,009.10-8,272,134.20

Finding the Fourth Proportional to 21,047,713.40, 31,565,009.10 and 8,272,134.20

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Solution

The fourth proportional to 21,047,713.40, 31,565,009.10 and 8,272,134.20 is: 12,405,622.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,047,713.40 : 31,565,009.10 = 8,272,134.20 : x
  2. Step 2: Convert to fraction form
    21,047,713.40/31,565,009.10 = 8,272,134.20/x
  3. Step 3: Cross multiply
    21,047,713.40x = 31,565,009.10 × 8,272,134.20
  4. Step 4: Simplify right side
    21,047,713.40x = 261,109,991,299,421.25
  5. Step 5: Solve for x
    x = 261,109,991,299,421.25/21,047,713.40
  6. Step 6: Final answer
    x = 12,405,622.71

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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.