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Finding the Fourth Proportional to 18,009,852.96, 24,853,870.80 and 9,861,849.12

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Solution

The fourth proportional to 18,009,852.96, 24,853,870.80 and 9,861,849.12 is: 13,609,501.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,009,852.96 : 24,853,870.80 = 9,861,849.12 : x
  2. Step 2: Convert to fraction form
    18,009,852.96/24,853,870.80 = 9,861,849.12/x
  3. Step 3: Cross multiply
    18,009,852.96x = 24,853,870.80 × 9,861,849.12
  4. Step 4: Simplify right side
    18,009,852.96x = 245,105,123,877,573.69
  5. Step 5: Solve for x
    x = 245,105,123,877,573.69/18,009,852.96
  6. Step 6: Final answer
    x = 13,609,501.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.