Home / 13,290,123.89-19,935,819.50-6,458,558.24

Finding the Fourth Proportional to 13,290,123.89, 19,935,819.50 and 6,458,558.24

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Solution

The fourth proportional to 13,290,123.89, 19,935,819.50 and 6,458,558.24 is: 9,688,145.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290,123.89 : 19,935,819.50 = 6,458,558.24 : x
  2. Step 2: Convert to fraction form
    13,290,123.89/19,935,819.50 = 6,458,558.24/x
  3. Step 3: Cross multiply
    13,290,123.89x = 19,935,819.50 × 6,458,558.24
  4. Step 4: Simplify right side
    13,290,123.89x = 128,756,651,320,424.44
  5. Step 5: Solve for x
    x = 128,756,651,320,424.44/13,290,123.89
  6. Step 6: Final answer
    x = 9,688,145.30

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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.