Home / 12,127,965.40-18,191,948.10-7,344,996.40

Finding the Fourth Proportional to 12,127,965.40, 18,191,948.10 and 7,344,996.40

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Solution

The fourth proportional to 12,127,965.40, 18,191,948.10 and 7,344,996.40 is: 11,017,494.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127,965.40 : 18,191,948.10 = 7,344,996.40 : x
  2. Step 2: Convert to fraction form
    12,127,965.40/18,191,948.10 = 7,344,996.40/x
  3. Step 3: Cross multiply
    12,127,965.40x = 18,191,948.10 × 7,344,996.40
  4. Step 4: Simplify right side
    12,127,965.40x = 133,619,793,303,486.86
  5. Step 5: Solve for x
    x = 133,619,793,303,486.86/12,127,965.40
  6. Step 6: Final answer
    x = 11,017,494.60

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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.