Home / 12,123.28-16,713.06-8,580.28

Finding the Fourth Proportional to 12,123.28, 16,713.06 and 8,580.28

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Solution

The fourth proportional to 12,123.28, 16,713.06 and 8,580.28 is: 11,828.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,123.28 : 16,713.06 = 8,580.28 : x
  2. Step 2: Convert to fraction form
    12,123.28/16,713.06 = 8,580.28/x
  3. Step 3: Cross multiply
    12,123.28x = 16,713.06 × 8,580.28
  4. Step 4: Simplify right side
    12,123.28x = 143,402,734.46
  5. Step 5: Solve for x
    x = 143,402,734.46/12,123.28
  6. Step 6: Final answer
    x = 11,828.71

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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.