Home / 12,129,458.40-18,144,421.20-10,935,064.80

Finding the Fourth Proportional to 12,129,458.40, 18,144,421.20 and 10,935,064.80

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Solution

The fourth proportional to 12,129,458.40, 18,144,421.20 and 10,935,064.80 is: 16,357,731.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,129,458.40 : 18,144,421.20 = 10,935,064.80 : x
  2. Step 2: Convert to fraction form
    12,129,458.40/18,144,421.20 = 10,935,064.80/x
  3. Step 3: Cross multiply
    12,129,458.40x = 18,144,421.20 × 10,935,064.80
  4. Step 4: Simplify right side
    12,129,458.40x = 198,410,421,580,493.75
  5. Step 5: Solve for x
    x = 198,410,421,580,493.75/12,129,458.40
  6. Step 6: Final answer
    x = 16,357,731.32

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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.