Home / 20,655.42-28,507.59-11,703.30

Finding the Fourth Proportional to 20,655.42, 28,507.59 and 11,703.30

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Solution

The fourth proportional to 20,655.42, 28,507.59 and 11,703.30 is: 16,152.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.42 : 28,507.59 = 11,703.30 : x
  2. Step 2: Convert to fraction form
    20,655.42/28,507.59 = 11,703.30/x
  3. Step 3: Cross multiply
    20,655.42x = 28,507.59 × 11,703.30
  4. Step 4: Simplify right side
    20,655.42x = 333,632,878.05
  5. Step 5: Solve for x
    x = 333,632,878.05/20,655.42
  6. Step 6: Final answer
    x = 16,152.32

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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.