Home / 20,678,865.70-31,018,298.55-5,326,125.70

Finding the Fourth Proportional to 20,678,865.70, 31,018,298.55 and 5,326,125.70

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Solution

The fourth proportional to 20,678,865.70, 31,018,298.55 and 5,326,125.70 is: 7,989,188.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678,865.70 : 31,018,298.55 = 5,326,125.70 : x
  2. Step 2: Convert to fraction form
    20,678,865.70/31,018,298.55 = 5,326,125.70/x
  3. Step 3: Cross multiply
    20,678,865.70x = 31,018,298.55 × 5,326,125.70
  4. Step 4: Simplify right side
    20,678,865.70x = 165,207,357,077,427.75
  5. Step 5: Solve for x
    x = 165,207,357,077,427.75/20,678,865.70
  6. Step 6: Final answer
    x = 7,989,188.55

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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.