Home / 21,551.04-29,740.32-12,119.40

Finding the Fourth Proportional to 21,551.04, 29,740.32 and 12,119.40

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Solution

The fourth proportional to 21,551.04, 29,740.32 and 12,119.40 is: 16,724.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,551.04 : 29,740.32 = 12,119.40 : x
  2. Step 2: Convert to fraction form
    21,551.04/29,740.32 = 12,119.40/x
  3. Step 3: Cross multiply
    21,551.04x = 29,740.32 × 12,119.40
  4. Step 4: Simplify right side
    21,551.04x = 360,434,834.21
  5. Step 5: Solve for x
    x = 360,434,834.21/21,551.04
  6. Step 6: Final answer
    x = 16,724.71

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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.