Home / 14,297.72-21,348.80-12,807.32

Finding the Fourth Proportional to 14,297.72, 21,348.80 and 12,807.32

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Solution

The fourth proportional to 14,297.72, 21,348.80 and 12,807.32 is: 19,123.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,297.72 : 21,348.80 = 12,807.32 : x
  2. Step 2: Convert to fraction form
    14,297.72/21,348.80 = 12,807.32/x
  3. Step 3: Cross multiply
    14,297.72x = 21,348.80 × 12,807.32
  4. Step 4: Simplify right side
    14,297.72x = 273,420,913.22
  5. Step 5: Solve for x
    x = 273,420,913.22/14,297.72
  6. Step 6: Final answer
    x = 19,123.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.