Home / 12,308,220.90-18,465,744.15-5,123,139.30

Finding the Fourth Proportional to 12,308,220.90, 18,465,744.15 and 5,123,139.30

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Solution

The fourth proportional to 12,308,220.90, 18,465,744.15 and 5,123,139.30 is: 7,686,129.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,308,220.90 : 18,465,744.15 = 5,123,139.30 : x
  2. Step 2: Convert to fraction form
    12,308,220.90/18,465,744.15 = 5,123,139.30/x
  3. Step 3: Cross multiply
    12,308,220.90x = 18,465,744.15 × 5,123,139.30
  4. Step 4: Simplify right side
    12,308,220.90x = 94,602,579,558,610.08
  5. Step 5: Solve for x
    x = 94,602,579,558,610.08/12,308,220.90
  6. Step 6: Final answer
    x = 7,686,129.48

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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.