Home / 13,208.71-18,228.23-7,903.75

Finding the Fourth Proportional to 13,208.71, 18,228.23 and 7,903.75

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Solution

The fourth proportional to 13,208.71, 18,228.23 and 7,903.75 is: 10,907.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,208.71 : 18,228.23 = 7,903.75 : x
  2. Step 2: Convert to fraction form
    13,208.71/18,228.23 = 7,903.75/x
  3. Step 3: Cross multiply
    13,208.71x = 18,228.23 × 7,903.75
  4. Step 4: Simplify right side
    13,208.71x = 144,071,372.86
  5. Step 5: Solve for x
    x = 144,071,372.86/13,208.71
  6. Step 6: Final answer
    x = 10,907.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.