Home / 12,455.04-18,662.40-9,521.28

Finding the Fourth Proportional to 12,455.04, 18,662.40 and 9,521.28

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Solution

The fourth proportional to 12,455.04, 18,662.40 and 9,521.28 is: 14,266.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.04 : 18,662.40 = 9,521.28 : x
  2. Step 2: Convert to fraction form
    12,455.04/18,662.40 = 9,521.28/x
  3. Step 3: Cross multiply
    12,455.04x = 18,662.40 × 9,521.28
  4. Step 4: Simplify right side
    12,455.04x = 177,689,935.87
  5. Step 5: Solve for x
    x = 177,689,935.87/12,455.04
  6. Step 6: Final answer
    x = 14,266.51

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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.