Home / 20,678,864.70-31,018,297.05-5,326,124.70

Finding the Fourth Proportional to 20,678,864.70, 31,018,297.05 and 5,326,124.70

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Solution

The fourth proportional to 20,678,864.70, 31,018,297.05 and 5,326,124.70 is: 7,989,187.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678,864.70 : 31,018,297.05 = 5,326,124.70 : x
  2. Step 2: Convert to fraction form
    20,678,864.70/31,018,297.05 = 5,326,124.70/x
  3. Step 3: Cross multiply
    20,678,864.70x = 31,018,297.05 × 5,326,124.70
  4. Step 4: Simplify right side
    20,678,864.70x = 165,207,318,069,942.16
  5. Step 5: Solve for x
    x = 165,207,318,069,942.16/20,678,864.70
  6. Step 6: Final answer
    x = 7,989,187.05

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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.