Home / 20,636.37-28,503.96-15,913.67

Finding the Fourth Proportional to 20,636.37, 28,503.96 and 15,913.67

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Solution

The fourth proportional to 20,636.37, 28,503.96 and 15,913.67 is: 21,980.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,636.37 : 28,503.96 = 15,913.67 : x
  2. Step 2: Convert to fraction form
    20,636.37/28,503.96 = 15,913.67/x
  3. Step 3: Cross multiply
    20,636.37x = 28,503.96 × 15,913.67
  4. Step 4: Simplify right side
    20,636.37x = 453,602,613.13
  5. Step 5: Solve for x
    x = 453,602,613.13/20,636.37
  6. Step 6: Final answer
    x = 21,980.74

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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.