Home / 12,220.32-16,833.87-10,421.94

Finding the Fourth Proportional to 12,220.32, 16,833.87 and 10,421.94

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Solution

The fourth proportional to 12,220.32, 16,833.87 and 10,421.94 is: 14,356.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.32 : 16,833.87 = 10,421.94 : x
  2. Step 2: Convert to fraction form
    12,220.32/16,833.87 = 10,421.94/x
  3. Step 3: Cross multiply
    12,220.32x = 16,833.87 × 10,421.94
  4. Step 4: Simplify right side
    12,220.32x = 175,441,583.11
  5. Step 5: Solve for x
    x = 175,441,583.11/12,220.32
  6. Step 6: Final answer
    x = 14,356.55

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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.