Home / 14,123.80-19,488.64-8,154.32

Finding the Fourth Proportional to 14,123.80, 19,488.64 and 8,154.32

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Solution

The fourth proportional to 14,123.80, 19,488.64 and 8,154.32 is: 11,251.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,123.80 : 19,488.64 = 8,154.32 : x
  2. Step 2: Convert to fraction form
    14,123.80/19,488.64 = 8,154.32/x
  3. Step 3: Cross multiply
    14,123.80x = 19,488.64 × 8,154.32
  4. Step 4: Simplify right side
    14,123.80x = 158,916,606.92
  5. Step 5: Solve for x
    x = 158,916,606.92/14,123.80
  6. Step 6: Final answer
    x = 11,251.69

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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.