Home / 18,812.48-28,222.80-5,663.84

Finding the Fourth Proportional to 18,812.48, 28,222.80 and 5,663.84

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Solution

The fourth proportional to 18,812.48, 28,222.80 and 5,663.84 is: 8,496.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,812.48 : 28,222.80 = 5,663.84 : x
  2. Step 2: Convert to fraction form
    18,812.48/28,222.80 = 5,663.84/x
  3. Step 3: Cross multiply
    18,812.48x = 28,222.80 × 5,663.84
  4. Step 4: Simplify right side
    18,812.48x = 159,849,423.55
  5. Step 5: Solve for x
    x = 159,849,423.55/18,812.48
  6. Step 6: Final answer
    x = 8,496.99

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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.