Home / 20,530.63-30,740.32-10,649.22

Finding the Fourth Proportional to 20,530.63, 30,740.32 and 10,649.22

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Solution

The fourth proportional to 20,530.63, 30,740.32 and 10,649.22 is: 15,944.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,530.63 : 30,740.32 = 10,649.22 : x
  2. Step 2: Convert to fraction form
    20,530.63/30,740.32 = 10,649.22/x
  3. Step 3: Cross multiply
    20,530.63x = 30,740.32 × 10,649.22
  4. Step 4: Simplify right side
    20,530.63x = 327,360,430.55
  5. Step 5: Solve for x
    x = 327,360,430.55/20,530.63
  6. Step 6: Final answer
    x = 15,944.98

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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.