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Finding the Fourth Proportional to 17,978,392.59, 26,986,779.80 and 7,748,300.96

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Solution

The fourth proportional to 17,978,392.59, 26,986,779.80 and 7,748,300.96 is: 11,630,722.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,978,392.59 : 26,986,779.80 = 7,748,300.96 : x
  2. Step 2: Convert to fraction form
    17,978,392.59/26,986,779.80 = 7,748,300.96/x
  3. Step 3: Cross multiply
    17,978,392.59x = 26,986,779.80 × 7,748,300.96
  4. Step 4: Simplify right side
    17,978,392.59x = 209,101,691,657,973.22
  5. Step 5: Solve for x
    x = 209,101,691,657,973.22/17,978,392.59
  6. Step 6: Final answer
    x = 11,630,722.30

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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.