Home / 21,317,457.60-31,979,296.80-9,958,276.80

Finding the Fourth Proportional to 21,317,457.60, 31,979,296.80 and 9,958,276.80

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Solution

The fourth proportional to 21,317,457.60, 31,979,296.80 and 9,958,276.80 is: 14,938,868.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317,457.60 : 31,979,296.80 = 9,958,276.80 : x
  2. Step 2: Convert to fraction form
    21,317,457.60/31,979,296.80 = 9,958,276.80/x
  3. Step 3: Cross multiply
    21,317,457.60x = 31,979,296.80 × 9,958,276.80
  4. Step 4: Simplify right side
    21,317,457.60x = 318,458,689,403,754.25
  5. Step 5: Solve for x
    x = 318,458,689,403,754.25/21,317,457.60
  6. Step 6: Final answer
    x = 14,938,868.20

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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.