Home / 28,796,763.60-43,195,145.40-21,144,013.20

Finding the Fourth Proportional to 28,796,763.60, 43,195,145.40 and 21,144,013.20

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Solution

The fourth proportional to 28,796,763.60, 43,195,145.40 and 21,144,013.20 is: 31,716,019.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,796,763.60 : 43,195,145.40 = 21,144,013.20 : x
  2. Step 2: Convert to fraction form
    28,796,763.60/43,195,145.40 = 21,144,013.20/x
  3. Step 3: Cross multiply
    28,796,763.60x = 43,195,145.40 × 21,144,013.20
  4. Step 4: Simplify right side
    28,796,763.60x = 913,318,724,513,519.25
  5. Step 5: Solve for x
    x = 913,318,724,513,519.25/28,796,763.60
  6. Step 6: Final answer
    x = 31,716,019.80

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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.