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Finding the Fourth Proportional to 10,918.02, 16,384.61 and 4,995.64

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Solution

The fourth proportional to 10,918.02, 16,384.61 and 4,995.64 is: 7,496.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,918.02 : 16,384.61 = 4,995.64 : x
  2. Step 2: Convert to fraction form
    10,918.02/16,384.61 = 4,995.64/x
  3. Step 3: Cross multiply
    10,918.02x = 16,384.61 × 4,995.64
  4. Step 4: Simplify right side
    10,918.02x = 81,851,531.18
  5. Step 5: Solve for x
    x = 81,851,531.18/10,918.02
  6. Step 6: Final answer
    x = 7,496.92

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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.