Home / 13,351.71-18,418.08-9,312.24

Finding the Fourth Proportional to 13,351.71, 18,418.08 and 9,312.24

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Solution

The fourth proportional to 13,351.71, 18,418.08 and 9,312.24 is: 12,845.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.71 : 18,418.08 = 9,312.24 : x
  2. Step 2: Convert to fraction form
    13,351.71/18,418.08 = 9,312.24/x
  3. Step 3: Cross multiply
    13,351.71x = 18,418.08 × 9,312.24
  4. Step 4: Simplify right side
    13,351.71x = 171,513,581.30
  5. Step 5: Solve for x
    x = 171,513,581.30/13,351.71
  6. Step 6: Final answer
    x = 12,845.81

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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.