Home / 12,396,782.70-18,558,432.45-9,216,009.90

Finding the Fourth Proportional to 12,396,782.70, 18,558,432.45 and 9,216,009.90

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Solution

The fourth proportional to 12,396,782.70, 18,558,432.45 and 9,216,009.90 is: 13,796,700.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,396,782.70 : 18,558,432.45 = 9,216,009.90 : x
  2. Step 2: Convert to fraction form
    12,396,782.70/18,558,432.45 = 9,216,009.90/x
  3. Step 3: Cross multiply
    12,396,782.70x = 18,558,432.45 × 9,216,009.90
  4. Step 4: Simplify right side
    12,396,782.70x = 171,034,697,187,681.25
  5. Step 5: Solve for x
    x = 171,034,697,187,681.25/12,396,782.70
  6. Step 6: Final answer
    x = 13,796,700.43

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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.