Home / 12,986,378.60-19,462,979.10-9,979,658.60

Finding the Fourth Proportional to 12,986,378.60, 19,462,979.10 and 9,979,658.60

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Solution

The fourth proportional to 12,986,378.60, 19,462,979.10 and 9,979,658.60 is: 14,956,739.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,986,378.60 : 19,462,979.10 = 9,979,658.60 : x
  2. Step 2: Convert to fraction form
    12,986,378.60/19,462,979.10 = 9,979,658.60/x
  3. Step 3: Cross multiply
    12,986,378.60x = 19,462,979.10 × 9,979,658.60
  4. Step 4: Simplify right side
    12,986,378.60x = 194,233,886,756,935.28
  5. Step 5: Solve for x
    x = 194,233,886,756,935.28/12,986,378.60
  6. Step 6: Final answer
    x = 14,956,739.88

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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.