Home / 12,429,954.40-18,644,931.60-7,378,664.80

Finding the Fourth Proportional to 12,429,954.40, 18,644,931.60 and 7,378,664.80

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Solution

The fourth proportional to 12,429,954.40, 18,644,931.60 and 7,378,664.80 is: 11,067,997.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429,954.40 : 18,644,931.60 = 7,378,664.80 : x
  2. Step 2: Convert to fraction form
    12,429,954.40/18,644,931.60 = 7,378,664.80/x
  3. Step 3: Cross multiply
    12,429,954.40x = 18,644,931.60 × 7,378,664.80
  4. Step 4: Simplify right side
    12,429,954.40x = 137,574,700,495,327.69
  5. Step 5: Solve for x
    x = 137,574,700,495,327.69/12,429,954.40
  6. Step 6: Final answer
    x = 11,067,997.20

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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.