Home / 18,820,820.70-28,168,245.45-13,152,116.70

Finding the Fourth Proportional to 18,820,820.70, 28,168,245.45 and 13,152,116.70

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Solution

The fourth proportional to 18,820,820.70, 28,168,245.45 and 13,152,116.70 is: 19,684,160.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820,820.70 : 28,168,245.45 = 13,152,116.70 : x
  2. Step 2: Convert to fraction form
    18,820,820.70/28,168,245.45 = 13,152,116.70/x
  3. Step 3: Cross multiply
    18,820,820.70x = 28,168,245.45 × 13,152,116.70
  4. Step 4: Simplify right side
    18,820,820.70x = 370,472,051,392,644
  5. Step 5: Solve for x
    x = 370,472,051,392,644/18,820,820.70
  6. Step 6: Final answer
    x = 19,684,160.29

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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.