Home / 20,993,939.70-31,490,909.55-8,877,084.90

Finding the Fourth Proportional to 20,993,939.70, 31,490,909.55 and 8,877,084.90

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Solution

The fourth proportional to 20,993,939.70, 31,490,909.55 and 8,877,084.90 is: 13,315,627.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,993,939.70 : 31,490,909.55 = 8,877,084.90 : x
  2. Step 2: Convert to fraction form
    20,993,939.70/31,490,909.55 = 8,877,084.90/x
  3. Step 3: Cross multiply
    20,993,939.70x = 31,490,909.55 × 8,877,084.90
  4. Step 4: Simplify right side
    20,993,939.70x = 279,547,477,653,570.81
  5. Step 5: Solve for x
    x = 279,547,477,653,570.81/20,993,939.70
  6. Step 6: Final answer
    x = 13,315,627.35

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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.