Home / 18,936.90-28,401.63-6,457.62

Finding the Fourth Proportional to 18,936.90, 28,401.63 and 6,457.62

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Solution

The fourth proportional to 18,936.90, 28,401.63 and 6,457.62 is: 9,685.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,936.90 : 28,401.63 = 6,457.62 : x
  2. Step 2: Convert to fraction form
    18,936.90/28,401.63 = 6,457.62/x
  3. Step 3: Cross multiply
    18,936.90x = 28,401.63 × 6,457.62
  4. Step 4: Simplify right side
    18,936.90x = 183,406,933.92
  5. Step 5: Solve for x
    x = 183,406,933.92/18,936.90
  6. Step 6: Final answer
    x = 9,685.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.