Home / 20,997,379.40-31,496,069.10-6,813,955.40

Finding the Fourth Proportional to 20,997,379.40, 31,496,069.10 and 6,813,955.40

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Solution

The fourth proportional to 20,997,379.40, 31,496,069.10 and 6,813,955.40 is: 10,220,933.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997,379.40 : 31,496,069.10 = 6,813,955.40 : x
  2. Step 2: Convert to fraction form
    20,997,379.40/31,496,069.10 = 6,813,955.40/x
  3. Step 3: Cross multiply
    20,997,379.40x = 31,496,069.10 × 6,813,955.40
  4. Step 4: Simplify right side
    20,997,379.40x = 214,612,810,122,718.16
  5. Step 5: Solve for x
    x = 214,612,810,122,718.16/20,997,379.40
  6. Step 6: Final answer
    x = 10,220,933.10

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Similar ratio
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1.5x scale

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.