Home / 15,171.47-20,937.27-8,457.09

Finding the Fourth Proportional to 15,171.47, 20,937.27 and 8,457.09

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Solution

The fourth proportional to 15,171.47, 20,937.27 and 8,457.09 is: 11,671.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,171.47 : 20,937.27 = 8,457.09 : x
  2. Step 2: Convert to fraction form
    15,171.47/20,937.27 = 8,457.09/x
  3. Step 3: Cross multiply
    15,171.47x = 20,937.27 × 8,457.09
  4. Step 4: Simplify right side
    15,171.47x = 177,068,376.74
  5. Step 5: Solve for x
    x = 177,068,376.74/15,171.47
  6. Step 6: Final answer
    x = 11,671.15

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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.