Home / 20,507.20-30,762.63-5,716.40

Finding the Fourth Proportional to 20,507.20, 30,762.63 and 5,716.40

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Solution

The fourth proportional to 20,507.20, 30,762.63 and 5,716.40 is: 8,575.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,507.20 : 30,762.63 = 5,716.40 : x
  2. Step 2: Convert to fraction form
    20,507.20/30,762.63 = 5,716.40/x
  3. Step 3: Cross multiply
    20,507.20x = 30,762.63 × 5,716.40
  4. Step 4: Simplify right side
    20,507.20x = 175,851,344.32
  5. Step 5: Solve for x
    x = 175,851,344.32/20,507.20
  6. Step 6: Final answer
    x = 8,575.10

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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.