Home / 20,485.35-28,210.28-17,795.34

Finding the Fourth Proportional to 20,485.35, 28,210.28 and 17,795.34

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Solution

The fourth proportional to 20,485.35, 28,210.28 and 17,795.34 is: 24,505.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,485.35 : 28,210.28 = 17,795.34 : x
  2. Step 2: Convert to fraction form
    20,485.35/28,210.28 = 17,795.34/x
  3. Step 3: Cross multiply
    20,485.35x = 28,210.28 × 17,795.34
  4. Step 4: Simplify right side
    20,485.35x = 502,011,435.12
  5. Step 5: Solve for x
    x = 502,011,435.12/20,485.35
  6. Step 6: Final answer
    x = 24,505.88

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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.