Home / 7,021,005.12-9,689,178.24-3,965,673.60

Finding the Fourth Proportional to 7,021,005.12, 9,689,178.24 and 3,965,673.60

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Solution

The fourth proportional to 7,021,005.12, 9,689,178.24 and 3,965,673.60 is: 5,472,737.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021,005.12 : 9,689,178.24 = 3,965,673.60 : x
  2. Step 2: Convert to fraction form
    7,021,005.12/9,689,178.24 = 3,965,673.60/x
  3. Step 3: Cross multiply
    7,021,005.12x = 9,689,178.24 × 3,965,673.60
  4. Step 4: Simplify right side
    7,021,005.12x = 38,424,118,352,062.47
  5. Step 5: Solve for x
    x = 38,424,118,352,062.47/7,021,005.12
  6. Step 6: Final answer
    x = 5,472,737.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.