Home / 15,123.50-20,870.43-8,835.92

Finding the Fourth Proportional to 15,123.50, 20,870.43 and 8,835.92

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Solution

The fourth proportional to 15,123.50, 20,870.43 and 8,835.92 is: 12,193.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,123.50 : 20,870.43 = 8,835.92 : x
  2. Step 2: Convert to fraction form
    15,123.50/20,870.43 = 8,835.92/x
  3. Step 3: Cross multiply
    15,123.50x = 20,870.43 × 8,835.92
  4. Step 4: Simplify right side
    15,123.50x = 184,409,449.85
  5. Step 5: Solve for x
    x = 184,409,449.85/15,123.50
  6. Step 6: Final answer
    x = 12,193.57

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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.