Home / 18,931,771.16-28,410,435.30-7,415,810.36

Finding the Fourth Proportional to 18,931,771.16, 28,410,435.30 and 7,415,810.36

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Solution

The fourth proportional to 18,931,771.16, 28,410,435.30 and 7,415,810.36 is: 11,128,721.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,931,771.16 : 28,410,435.30 = 7,415,810.36 : x
  2. Step 2: Convert to fraction form
    18,931,771.16/28,410,435.30 = 7,415,810.36/x
  3. Step 3: Cross multiply
    18,931,771.16x = 28,410,435.30 × 7,415,810.36
  4. Step 4: Simplify right side
    18,931,771.16x = 210,686,400,429,849.72
  5. Step 5: Solve for x
    x = 210,686,400,429,849.72/18,931,771.16
  6. Step 6: Final answer
    x = 11,128,721.06

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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.