Home / 20,886,290.80-31,329,436.20-19,091,201.20

Finding the Fourth Proportional to 20,886,290.80, 31,329,436.20 and 19,091,201.20

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Solution

The fourth proportional to 20,886,290.80, 31,329,436.20 and 19,091,201.20 is: 28,636,801.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,886,290.80 : 31,329,436.20 = 19,091,201.20 : x
  2. Step 2: Convert to fraction form
    20,886,290.80/31,329,436.20 = 19,091,201.20/x
  3. Step 3: Cross multiply
    20,886,290.80x = 31,329,436.20 × 19,091,201.20
  4. Step 4: Simplify right side
    20,886,290.80x = 598,116,569,976,763.38
  5. Step 5: Solve for x
    x = 598,116,569,976,763.38/20,886,290.80
  6. Step 6: Final answer
    x = 28,636,801.80

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1.5x scale

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.