Home / 13,145.79-19,714.37-4,378.35

Finding the Fourth Proportional to 13,145.79, 19,714.37 and 4,378.35

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Solution

The fourth proportional to 13,145.79, 19,714.37 and 4,378.35 is: 6,566.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.79 : 19,714.37 = 4,378.35 : x
  2. Step 2: Convert to fraction form
    13,145.79/19,714.37 = 4,378.35/x
  3. Step 3: Cross multiply
    13,145.79x = 19,714.37 × 4,378.35
  4. Step 4: Simplify right side
    13,145.79x = 86,316,390.00
  5. Step 5: Solve for x
    x = 86,316,390.00/13,145.79
  6. Step 6: Final answer
    x = 6,566.09

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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.