Home / 13,875.13-20,810.61-5,107.99

Finding the Fourth Proportional to 13,875.13, 20,810.61 and 5,107.99

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Solution

The fourth proportional to 13,875.13, 20,810.61 and 5,107.99 is: 7,661.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,875.13 : 20,810.61 = 5,107.99 : x
  2. Step 2: Convert to fraction form
    13,875.13/20,810.61 = 5,107.99/x
  3. Step 3: Cross multiply
    13,875.13x = 20,810.61 × 5,107.99
  4. Step 4: Simplify right side
    13,875.13x = 106,300,387.77
  5. Step 5: Solve for x
    x = 106,300,387.77/13,875.13
  6. Step 6: Final answer
    x = 7,661.22

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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.