Home / 12,516,721.66-18,772,048-3,418,861.83

Finding the Fourth Proportional to 12,516,721.66, 18,772,048 and 3,418,861.83

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Solution

The fourth proportional to 12,516,721.66, 18,772,048 and 3,418,861.83 is: 5,127,463.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,516,721.66 : 18,772,048 = 3,418,861.83 : x
  2. Step 2: Convert to fraction form
    12,516,721.66/18,772,048 = 3,418,861.83/x
  3. Step 3: Cross multiply
    12,516,721.66x = 18,772,048 × 3,418,861.83
  4. Step 4: Simplify right side
    12,516,721.66x = 64,179,038,378,127.84
  5. Step 5: Solve for x
    x = 64,179,038,378,127.84/12,516,721.66
  6. Step 6: Final answer
    x = 5,127,463.89

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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.