Home / 21,317,673.80-31,976,510.70-19,890,000.20

Finding the Fourth Proportional to 21,317,673.80, 31,976,510.70 and 19,890,000.20

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Solution

The fourth proportional to 21,317,673.80, 31,976,510.70 and 19,890,000.20 is: 29,835,000.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317,673.80 : 31,976,510.70 = 19,890,000.20 : x
  2. Step 2: Convert to fraction form
    21,317,673.80/31,976,510.70 = 19,890,000.20/x
  3. Step 3: Cross multiply
    21,317,673.80x = 31,976,510.70 × 19,890,000.20
  4. Step 4: Simplify right side
    21,317,673.80x = 636,012,804,218,302.12
  5. Step 5: Solve for x
    x = 636,012,804,218,302.12/21,317,673.80
  6. Step 6: Final answer
    x = 29,835,000.30

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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.