Home / 20,835,603.40-31,203,638.70-12,773,446.60

Finding the Fourth Proportional to 20,835,603.40, 31,203,638.70 and 12,773,446.60

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Solution

The fourth proportional to 20,835,603.40, 31,203,638.70 and 12,773,446.60 is: 19,129,660.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835,603.40 : 31,203,638.70 = 12,773,446.60 : x
  2. Step 2: Convert to fraction form
    20,835,603.40/31,203,638.70 = 12,773,446.60/x
  3. Step 3: Cross multiply
    20,835,603.40x = 31,203,638.70 × 12,773,446.60
  4. Step 4: Simplify right side
    20,835,603.40x = 398,578,012,660,143.38
  5. Step 5: Solve for x
    x = 398,578,012,660,143.38/20,835,603.40
  6. Step 6: Final answer
    x = 19,129,660.18

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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.