Home / 14,399.10-19,878.60-9,946.80

Finding the Fourth Proportional to 14,399.10, 19,878.60 and 9,946.80

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Solution

The fourth proportional to 14,399.10, 19,878.60 and 9,946.80 is: 13,732.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,399.10 : 19,878.60 = 9,946.80 : x
  2. Step 2: Convert to fraction form
    14,399.10/19,878.60 = 9,946.80/x
  3. Step 3: Cross multiply
    14,399.10x = 19,878.60 × 9,946.80
  4. Step 4: Simplify right side
    14,399.10x = 197,728,458.48
  5. Step 5: Solve for x
    x = 197,728,458.48/14,399.10
  6. Step 6: Final answer
    x = 13,732.00

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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.