Home / 13,392.87-18,461.70-9,402.81

Finding the Fourth Proportional to 13,392.87, 18,461.70 and 9,402.81

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Solution

The fourth proportional to 13,392.87, 18,461.70 and 9,402.81 is: 12,961.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,392.87 : 18,461.70 = 9,402.81 : x
  2. Step 2: Convert to fraction form
    13,392.87/18,461.70 = 9,402.81/x
  3. Step 3: Cross multiply
    13,392.87x = 18,461.70 × 9,402.81
  4. Step 4: Simplify right side
    13,392.87x = 173,591,857.38
  5. Step 5: Solve for x
    x = 173,591,857.38/13,392.87
  6. Step 6: Final answer
    x = 12,961.51

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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.