Home / 20,457.48-30,631.50-11,680.32

Finding the Fourth Proportional to 20,457.48, 30,631.50 and 11,680.32

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Solution

The fourth proportional to 20,457.48, 30,631.50 and 11,680.32 is: 17,489.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,457.48 : 30,631.50 = 11,680.32 : x
  2. Step 2: Convert to fraction form
    20,457.48/30,631.50 = 11,680.32/x
  3. Step 3: Cross multiply
    20,457.48x = 30,631.50 × 11,680.32
  4. Step 4: Simplify right side
    20,457.48x = 357,785,722.08
  5. Step 5: Solve for x
    x = 357,785,722.08/20,457.48
  6. Step 6: Final answer
    x = 17,489.24

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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.