Home / 13,268.90-18,311.85-7,605.40

Finding the Fourth Proportional to 13,268.90, 18,311.85 and 7,605.40

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Solution

The fourth proportional to 13,268.90, 18,311.85 and 7,605.40 is: 10,495.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,268.90 : 18,311.85 = 7,605.40 : x
  2. Step 2: Convert to fraction form
    13,268.90/18,311.85 = 7,605.40/x
  3. Step 3: Cross multiply
    13,268.90x = 18,311.85 × 7,605.40
  4. Step 4: Simplify right side
    13,268.90x = 139,268,943.99
  5. Step 5: Solve for x
    x = 139,268,943.99/13,268.90
  6. Step 6: Final answer
    x = 10,495.89

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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.