Home / 10,338.40-15,477.12-6,821.92

Finding the Fourth Proportional to 10,338.40, 15,477.12 and 6,821.92

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Solution

The fourth proportional to 10,338.40, 15,477.12 and 6,821.92 is: 10,212.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,338.40 : 15,477.12 = 6,821.92 : x
  2. Step 2: Convert to fraction form
    10,338.40/15,477.12 = 6,821.92/x
  3. Step 3: Cross multiply
    10,338.40x = 15,477.12 × 6,821.92
  4. Step 4: Simplify right side
    10,338.40x = 105,583,674.47
  5. Step 5: Solve for x
    x = 105,583,674.47/10,338.40
  6. Step 6: Final answer
    x = 10,212.77

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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.