Home / 18,478.86-27,703.68-9,709.02

Finding the Fourth Proportional to 18,478.86, 27,703.68 and 9,709.02

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Solution

The fourth proportional to 18,478.86, 27,703.68 and 9,709.02 is: 14,555.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,478.86 : 27,703.68 = 9,709.02 : x
  2. Step 2: Convert to fraction form
    18,478.86/27,703.68 = 9,709.02/x
  3. Step 3: Cross multiply
    18,478.86x = 27,703.68 × 9,709.02
  4. Step 4: Simplify right side
    18,478.86x = 268,975,583.19
  5. Step 5: Solve for x
    x = 268,975,583.19/18,478.86
  6. Step 6: Final answer
    x = 14,555.85

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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.