Home / 20,410.40-28,169.43-12,457.25

Finding the Fourth Proportional to 20,410.40, 28,169.43 and 12,457.25

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Solution

The fourth proportional to 20,410.40, 28,169.43 and 12,457.25 is: 17,192.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,410.40 : 28,169.43 = 12,457.25 : x
  2. Step 2: Convert to fraction form
    20,410.40/28,169.43 = 12,457.25/x
  3. Step 3: Cross multiply
    20,410.40x = 28,169.43 × 12,457.25
  4. Step 4: Simplify right side
    20,410.40x = 350,913,491.02
  5. Step 5: Solve for x
    x = 350,913,491.02/20,410.40
  6. Step 6: Final answer
    x = 17,192.88

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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.