Home / 20,607.99-28,439.64-11,655.32

Finding the Fourth Proportional to 20,607.99, 28,439.64 and 11,655.32

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Solution

The fourth proportional to 20,607.99, 28,439.64 and 11,655.32 is: 16,084.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,607.99 : 28,439.64 = 11,655.32 : x
  2. Step 2: Convert to fraction form
    20,607.99/28,439.64 = 11,655.32/x
  3. Step 3: Cross multiply
    20,607.99x = 28,439.64 × 11,655.32
  4. Step 4: Simplify right side
    20,607.99x = 331,472,962.69
  5. Step 5: Solve for x
    x = 331,472,962.69/20,607.99
  6. Step 6: Final answer
    x = 16,084.68

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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.