Home / 12,790,529.40-17,650,977.54-6,989,311.98

Finding the Fourth Proportional to 12,790,529.40, 17,650,977.54 and 6,989,311.98

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Solution

The fourth proportional to 12,790,529.40, 17,650,977.54 and 6,989,311.98 is: 9,645,276.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790,529.40 : 17,650,977.54 = 6,989,311.98 : x
  2. Step 2: Convert to fraction form
    12,790,529.40/17,650,977.54 = 6,989,311.98/x
  3. Step 3: Cross multiply
    12,790,529.40x = 17,650,977.54 × 6,989,311.98
  4. Step 4: Simplify right side
    12,790,529.40x = 123,368,188,779,032.94
  5. Step 5: Solve for x
    x = 123,368,188,779,032.94/12,790,529.40
  6. Step 6: Final answer
    x = 9,645,276.20

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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.