Home / 13,623.08-18,802.18-7,958.49

Finding the Fourth Proportional to 13,623.08, 18,802.18 and 7,958.49

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Solution

The fourth proportional to 13,623.08, 18,802.18 and 7,958.49 is: 10,984.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,623.08 : 18,802.18 = 7,958.49 : x
  2. Step 2: Convert to fraction form
    13,623.08/18,802.18 = 7,958.49/x
  3. Step 3: Cross multiply
    13,623.08x = 18,802.18 × 7,958.49
  4. Step 4: Simplify right side
    13,623.08x = 149,636,961.51
  5. Step 5: Solve for x
    x = 149,636,961.51/13,623.08
  6. Step 6: Final answer
    x = 10,984.08

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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.