Home / 12,890,206.61-17,788,129.90-7,088,988.23

Finding the Fourth Proportional to 12,890,206.61, 17,788,129.90 and 7,088,988.23

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Solution

The fourth proportional to 12,890,206.61, 17,788,129.90 and 7,088,988.23 is: 9,782,608.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890,206.61 : 17,788,129.90 = 7,088,988.23 : x
  2. Step 2: Convert to fraction form
    12,890,206.61/17,788,129.90 = 7,088,988.23/x
  3. Step 3: Cross multiply
    12,890,206.61x = 17,788,129.90 × 7,088,988.23
  4. Step 4: Simplify right side
    12,890,206.61x = 126,099,843,388,147.95
  5. Step 5: Solve for x
    x = 126,099,843,388,147.95/12,890,206.61
  6. Step 6: Final answer
    x = 9,782,608.40

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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.