Home / 20,666,482.80-28,519,719.62-12,823,077.84

Finding the Fourth Proportional to 20,666,482.80, 28,519,719.62 and 12,823,077.84

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Solution

The fourth proportional to 20,666,482.80, 28,519,719.62 and 12,823,077.84 is: 17,695,830.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,666,482.80 : 28,519,719.62 = 12,823,077.84 : x
  2. Step 2: Convert to fraction form
    20,666,482.80/28,519,719.62 = 12,823,077.84/x
  3. Step 3: Cross multiply
    20,666,482.80x = 28,519,719.62 × 12,823,077.84
  4. Step 4: Simplify right side
    20,666,482.80x = 365,710,584,662,235.25
  5. Step 5: Solve for x
    x = 365,710,584,662,235.25/20,666,482.80
  6. Step 6: Final answer
    x = 17,695,830.89

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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.