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Finding the Fourth Proportional to 15,088.41, 20,821.64 and 8,373.91

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Solution

The fourth proportional to 15,088.41, 20,821.64 and 8,373.91 is: 11,555.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,088.41 : 20,821.64 = 8,373.91 : x
  2. Step 2: Convert to fraction form
    15,088.41/20,821.64 = 8,373.91/x
  3. Step 3: Cross multiply
    15,088.41x = 20,821.64 × 8,373.91
  4. Step 4: Simplify right side
    15,088.41x = 174,358,539.41
  5. Step 5: Solve for x
    x = 174,358,539.41/15,088.41
  6. Step 6: Final answer
    x = 11,555.79

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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.