Home / 21,063,605.80-31,559,979.30-18,016,677.40

Finding the Fourth Proportional to 21,063,605.80, 31,559,979.30 and 18,016,677.40

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Solution

The fourth proportional to 21,063,605.80, 31,559,979.30 and 18,016,677.40 is: 26,994,711.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,063,605.80 : 31,559,979.30 = 18,016,677.40 : x
  2. Step 2: Convert to fraction form
    21,063,605.80/31,559,979.30 = 18,016,677.40/x
  3. Step 3: Cross multiply
    21,063,605.80x = 31,559,979.30 × 18,016,677.40
  4. Step 4: Simplify right side
    21,063,605.80x = 568,605,965,798,777.75
  5. Step 5: Solve for x
    x = 568,605,965,798,777.75/21,063,605.80
  6. Step 6: Final answer
    x = 26,994,711.69

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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.