Home / 21,991,970.40-32,931,968.40-20,984,200.80

Finding the Fourth Proportional to 21,991,970.40, 32,931,968.40 and 20,984,200.80

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Solution

The fourth proportional to 21,991,970.40, 32,931,968.40 and 20,984,200.80 is: 31,422,879.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,991,970.40 : 32,931,968.40 = 20,984,200.80 : x
  2. Step 2: Convert to fraction form
    21,991,970.40/32,931,968.40 = 20,984,200.80/x
  3. Step 3: Cross multiply
    21,991,970.40x = 32,931,968.40 × 20,984,200.80
  4. Step 4: Simplify right side
    21,991,970.40x = 691,051,037,644,854.75
  5. Step 5: Solve for x
    x = 691,051,037,644,854.75/21,991,970.40
  6. Step 6: Final answer
    x = 31,422,879.58

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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.