Home / 13,810.20-20,715.30-10,529.70

Finding the Fourth Proportional to 13,810.20, 20,715.30 and 10,529.70

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Solution

The fourth proportional to 13,810.20, 20,715.30 and 10,529.70 is: 15,794.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,810.20 : 20,715.30 = 10,529.70 : x
  2. Step 2: Convert to fraction form
    13,810.20/20,715.30 = 10,529.70/x
  3. Step 3: Cross multiply
    13,810.20x = 20,715.30 × 10,529.70
  4. Step 4: Simplify right side
    13,810.20x = 218,125,894.41
  5. Step 5: Solve for x
    x = 218,125,894.41/13,810.20
  6. Step 6: Final answer
    x = 15,794.55

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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.