Home / 13,400.08-18,488.04-7,809.04

Finding the Fourth Proportional to 13,400.08, 18,488.04 and 7,809.04

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Solution

The fourth proportional to 13,400.08, 18,488.04 and 7,809.04 is: 10,774.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,400.08 : 18,488.04 = 7,809.04 : x
  2. Step 2: Convert to fraction form
    13,400.08/18,488.04 = 7,809.04/x
  3. Step 3: Cross multiply
    13,400.08x = 18,488.04 × 7,809.04
  4. Step 4: Simplify right side
    13,400.08x = 144,373,843.88
  5. Step 5: Solve for x
    x = 144,373,843.88/13,400.08
  6. Step 6: Final answer
    x = 10,774.10

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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.