Home / 15,485.04-21,369.24-8,411.48

Finding the Fourth Proportional to 15,485.04, 21,369.24 and 8,411.48

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Solution

The fourth proportional to 15,485.04, 21,369.24 and 8,411.48 is: 11,607.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,485.04 : 21,369.24 = 8,411.48 : x
  2. Step 2: Convert to fraction form
    15,485.04/21,369.24 = 8,411.48/x
  3. Step 3: Cross multiply
    15,485.04x = 21,369.24 × 8,411.48
  4. Step 4: Simplify right side
    15,485.04x = 179,746,934.88
  5. Step 5: Solve for x
    x = 179,746,934.88/15,485.04
  6. Step 6: Final answer
    x = 11,607.78

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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.