Home / 13,376.48-18,440.31-9,385.22

Finding the Fourth Proportional to 13,376.48, 18,440.31 and 9,385.22

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Solution

The fourth proportional to 13,376.48, 18,440.31 and 9,385.22 is: 12,938.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,376.48 : 18,440.31 = 9,385.22 : x
  2. Step 2: Convert to fraction form
    13,376.48/18,440.31 = 9,385.22/x
  3. Step 3: Cross multiply
    13,376.48x = 18,440.31 × 9,385.22
  4. Step 4: Simplify right side
    13,376.48x = 173,066,366.22
  5. Step 5: Solve for x
    x = 173,066,366.22/13,376.48
  6. Step 6: Final answer
    x = 12,938.11

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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.