Home / 18,727,891.80-28,091,837.70-9,657,965.40

Finding the Fourth Proportional to 18,727,891.80, 28,091,837.70 and 9,657,965.40

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Solution

The fourth proportional to 18,727,891.80, 28,091,837.70 and 9,657,965.40 is: 14,486,948.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,727,891.80 : 28,091,837.70 = 9,657,965.40 : x
  2. Step 2: Convert to fraction form
    18,727,891.80/28,091,837.70 = 9,657,965.40/x
  3. Step 3: Cross multiply
    18,727,891.80x = 28,091,837.70 × 9,657,965.40
  4. Step 4: Simplify right side
    18,727,891.80x = 271,309,996,529,015.59
  5. Step 5: Solve for x
    x = 271,309,996,529,015.59/18,727,891.80
  6. Step 6: Final answer
    x = 14,486,948.10

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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.