Home / 12,129,743.40-18,144,848.70-10,935,349.80

Finding the Fourth Proportional to 12,129,743.40, 18,144,848.70 and 10,935,349.80

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Solution

The fourth proportional to 12,129,743.40, 18,144,848.70 and 10,935,349.80 is: 16,358,158.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,129,743.40 : 18,144,848.70 = 10,935,349.80 : x
  2. Step 2: Convert to fraction form
    12,129,743.40/18,144,848.70 = 10,935,349.80/x
  3. Step 3: Cross multiply
    12,129,743.40x = 18,144,848.70 × 10,935,349.80
  4. Step 4: Simplify right side
    12,129,743.40x = 198,420,267,602,575.25
  5. Step 5: Solve for x
    x = 198,420,267,602,575.25/12,129,743.40
  6. Step 6: Final answer
    x = 16,358,158.71

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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.