Home / 13,386.25-18,465.33-8,348.05

Finding the Fourth Proportional to 13,386.25, 18,465.33 and 8,348.05

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Solution

The fourth proportional to 13,386.25, 18,465.33 and 8,348.05 is: 11,515.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.25 : 18,465.33 = 8,348.05 : x
  2. Step 2: Convert to fraction form
    13,386.25/18,465.33 = 8,348.05/x
  3. Step 3: Cross multiply
    13,386.25x = 18,465.33 × 8,348.05
  4. Step 4: Simplify right side
    13,386.25x = 154,149,498.11
  5. Step 5: Solve for x
    x = 154,149,498.11/13,386.25
  6. Step 6: Final answer
    x = 11,515.51

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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.