Home / 15,580.73-21,508.36-12,123.50

Finding the Fourth Proportional to 15,580.73, 21,508.36 and 12,123.50

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Solution

The fourth proportional to 15,580.73, 21,508.36 and 12,123.50 is: 16,735.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,580.73 : 21,508.36 = 12,123.50 : x
  2. Step 2: Convert to fraction form
    15,580.73/21,508.36 = 12,123.50/x
  3. Step 3: Cross multiply
    15,580.73x = 21,508.36 × 12,123.50
  4. Step 4: Simplify right side
    15,580.73x = 260,756,464.61
  5. Step 5: Solve for x
    x = 260,756,464.61/15,580.73
  6. Step 6: Final answer
    x = 16,735.83

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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.