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Finding the Fourth Proportional to 15,094.50, 20,830.44 and 8,807.28

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Solution

The fourth proportional to 15,094.50, 20,830.44 and 8,807.28 is: 12,154.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,094.50 : 20,830.44 = 8,807.28 : x
  2. Step 2: Convert to fraction form
    15,094.50/20,830.44 = 8,807.28/x
  3. Step 3: Cross multiply
    15,094.50x = 20,830.44 × 8,807.28
  4. Step 4: Simplify right side
    15,094.50x = 183,459,517.60
  5. Step 5: Solve for x
    x = 183,459,517.60/15,094.50
  6. Step 6: Final answer
    x = 12,154.06

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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.