Home / 21,332.08-29,435.90-12,378.04

Finding the Fourth Proportional to 21,332.08, 29,435.90 and 12,378.04

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Solution

The fourth proportional to 21,332.08, 29,435.90 and 12,378.04 is: 17,080.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,332.08 : 29,435.90 = 12,378.04 : x
  2. Step 2: Convert to fraction form
    21,332.08/29,435.90 = 12,378.04/x
  3. Step 3: Cross multiply
    21,332.08x = 29,435.90 × 12,378.04
  4. Step 4: Simplify right side
    21,332.08x = 364,358,747.64
  5. Step 5: Solve for x
    x = 364,358,747.64/21,332.08
  6. Step 6: Final answer
    x = 17,080.32

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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.