Home / 13,020,631.20-19,530,946.80-12,357,079.20

Finding the Fourth Proportional to 13,020,631.20, 19,530,946.80 and 12,357,079.20

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Solution

The fourth proportional to 13,020,631.20, 19,530,946.80 and 12,357,079.20 is: 18,535,618.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,020,631.20 : 19,530,946.80 = 12,357,079.20 : x
  2. Step 2: Convert to fraction form
    13,020,631.20/19,530,946.80 = 12,357,079.20/x
  3. Step 3: Cross multiply
    13,020,631.20x = 19,530,946.80 × 12,357,079.20
  4. Step 4: Simplify right side
    13,020,631.20x = 241,345,456,458,586.56
  5. Step 5: Solve for x
    x = 241,345,456,458,586.56/13,020,631.20
  6. Step 6: Final answer
    x = 18,535,618.80

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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.