Home / 28,393.14-42,606.09-12,810.75

Finding the Fourth Proportional to 28,393.14, 42,606.09 and 12,810.75

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Solution

The fourth proportional to 28,393.14, 42,606.09 and 12,810.75 is: 19,223.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,393.14 : 42,606.09 = 12,810.75 : x
  2. Step 2: Convert to fraction form
    28,393.14/42,606.09 = 12,810.75/x
  3. Step 3: Cross multiply
    28,393.14x = 42,606.09 × 12,810.75
  4. Step 4: Simplify right side
    28,393.14x = 545,815,967.47
  5. Step 5: Solve for x
    x = 545,815,967.47/28,393.14
  6. Step 6: Final answer
    x = 19,223.52

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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.