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Finding the Fourth Proportional to 16,985.34, 25,478.00 and 5,299.47

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Solution

The fourth proportional to 16,985.34, 25,478.00 and 5,299.47 is: 7,949.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,985.34 : 25,478.00 = 5,299.47 : x
  2. Step 2: Convert to fraction form
    16,985.34/25,478.00 = 5,299.47/x
  3. Step 3: Cross multiply
    16,985.34x = 25,478.00 × 5,299.47
  4. Step 4: Simplify right side
    16,985.34x = 135,019,782.52
  5. Step 5: Solve for x
    x = 135,019,782.52/16,985.34
  6. Step 6: Final answer
    x = 7,949.20

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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.