Home / 19,790,139.96-27,318,753.90-12,920,510.52

Finding the Fourth Proportional to 19,790,139.96, 27,318,753.90 and 12,920,510.52

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Solution

The fourth proportional to 19,790,139.96, 27,318,753.90 and 12,920,510.52 is: 17,835,763.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,790,139.96 : 27,318,753.90 = 12,920,510.52 : x
  2. Step 2: Convert to fraction form
    19,790,139.96/27,318,753.90 = 12,920,510.52/x
  3. Step 3: Cross multiply
    19,790,139.96x = 27,318,753.90 × 12,920,510.52
  4. Step 4: Simplify right side
    19,790,139.96x = 352,972,247,158,241
  5. Step 5: Solve for x
    x = 352,972,247,158,241/19,790,139.96
  6. Step 6: Final answer
    x = 17,835,763.06

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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.