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Finding the Fourth Proportional to 16,719.40, 25,127.70 and 16,427.80

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Solution

The fourth proportional to 16,719.40, 25,127.70 and 16,427.80 is: 24,689.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,719.40 : 25,127.70 = 16,427.80 : x
  2. Step 2: Convert to fraction form
    16,719.40/25,127.70 = 16,427.80/x
  3. Step 3: Cross multiply
    16,719.40x = 25,127.70 × 16,427.80
  4. Step 4: Simplify right side
    16,719.40x = 412,792,830.06
  5. Step 5: Solve for x
    x = 412,792,830.06/16,719.40
  6. Step 6: Final answer
    x = 24,689.45

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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.