Home / 13,529.76-20,285.40-4,642.72

Finding the Fourth Proportional to 13,529.76, 20,285.40 and 4,642.72

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Solution

The fourth proportional to 13,529.76, 20,285.40 and 4,642.72 is: 6,960.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,529.76 : 20,285.40 = 4,642.72 : x
  2. Step 2: Convert to fraction form
    13,529.76/20,285.40 = 4,642.72/x
  3. Step 3: Cross multiply
    13,529.76x = 20,285.40 × 4,642.72
  4. Step 4: Simplify right side
    13,529.76x = 94,179,432.29
  5. Step 5: Solve for x
    x = 94,179,432.29/13,529.76
  6. Step 6: Final answer
    x = 6,960.91

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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.