Home / 18,931,774.16-28,410,439.82-7,415,813.36

Finding the Fourth Proportional to 18,931,774.16, 28,410,439.82 and 7,415,813.36

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Solution

The fourth proportional to 18,931,774.16, 28,410,439.82 and 7,415,813.36 is: 11,128,725.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,931,774.16 : 28,410,439.82 = 7,415,813.36 : x
  2. Step 2: Convert to fraction form
    18,931,774.16/28,410,439.82 = 7,415,813.36/x
  3. Step 3: Cross multiply
    18,931,774.16x = 28,410,439.82 × 7,415,813.36
  4. Step 4: Simplify right side
    18,931,774.16x = 210,686,519,180,632
  5. Step 5: Solve for x
    x = 210,686,519,180,632/18,931,774.16
  6. Step 6: Final answer
    x = 11,128,725.57

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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.