Home / 12,461,869.80-18,682,307.10-6,478,237.80

Finding the Fourth Proportional to 12,461,869.80, 18,682,307.10 and 6,478,237.80

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Solution

The fourth proportional to 12,461,869.80, 18,682,307.10 and 6,478,237.80 is: 9,711,899.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,461,869.80 : 18,682,307.10 = 6,478,237.80 : x
  2. Step 2: Convert to fraction form
    12,461,869.80/18,682,307.10 = 6,478,237.80/x
  3. Step 3: Cross multiply
    12,461,869.80x = 18,682,307.10 × 6,478,237.80
  4. Step 4: Simplify right side
    12,461,869.80x = 121,028,428,046,428.39
  5. Step 5: Solve for x
    x = 121,028,428,046,428.39/12,461,869.80
  6. Step 6: Final answer
    x = 9,711,899.58

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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.