Home / 20,382.60-28,115.05-14,725.67

Finding the Fourth Proportional to 20,382.60, 28,115.05 and 14,725.67

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Solution

The fourth proportional to 20,382.60, 28,115.05 and 14,725.67 is: 20,312.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,382.60 : 28,115.05 = 14,725.67 : x
  2. Step 2: Convert to fraction form
    20,382.60/28,115.05 = 14,725.67/x
  3. Step 3: Cross multiply
    20,382.60x = 28,115.05 × 14,725.67
  4. Step 4: Simplify right side
    20,382.60x = 414,012,798.55
  5. Step 5: Solve for x
    x = 414,012,798.55/20,382.60
  6. Step 6: Final answer
    x = 20,312.07

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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.