Home / 13,428,299.76-20,128,106.88-7,658,611.44

Finding the Fourth Proportional to 13,428,299.76, 20,128,106.88 and 7,658,611.44

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Solution

The fourth proportional to 13,428,299.76, 20,128,106.88 and 7,658,611.44 is: 11,479,737.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428,299.76 : 20,128,106.88 = 7,658,611.44 : x
  2. Step 2: Convert to fraction form
    13,428,299.76/20,128,106.88 = 7,658,611.44/x
  3. Step 3: Cross multiply
    13,428,299.76x = 20,128,106.88 × 7,658,611.44
  4. Step 4: Simplify right side
    13,428,299.76x = 154,153,349,616,710.72
  5. Step 5: Solve for x
    x = 154,153,349,616,710.72/13,428,299.76
  6. Step 6: Final answer
    x = 11,479,737.00

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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.