Home / 21,369,229.58-31,899,112.04-18,783,547.68

Finding the Fourth Proportional to 21,369,229.58, 31,899,112.04 and 18,783,547.68

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Solution

The fourth proportional to 21,369,229.58, 31,899,112.04 and 18,783,547.68 is: 28,039,311.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,369,229.58 : 31,899,112.04 = 18,783,547.68 : x
  2. Step 2: Convert to fraction form
    21,369,229.58/31,899,112.04 = 18,783,547.68/x
  3. Step 3: Cross multiply
    21,369,229.58x = 31,899,112.04 × 18,783,547.68
  4. Step 4: Simplify right side
    21,369,229.58x = 599,178,491,953,002
  5. Step 5: Solve for x
    x = 599,178,491,953,002/21,369,229.58
  6. Step 6: Final answer
    x = 28,039,311.84

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.