Home / 13,345.20-19,993.80-6,404.40

Finding the Fourth Proportional to 13,345.20, 19,993.80 and 6,404.40

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Solution

The fourth proportional to 13,345.20, 19,993.80 and 6,404.40 is: 9,595.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,345.20 : 19,993.80 = 6,404.40 : x
  2. Step 2: Convert to fraction form
    13,345.20/19,993.80 = 6,404.40/x
  3. Step 3: Cross multiply
    13,345.20x = 19,993.80 × 6,404.40
  4. Step 4: Simplify right side
    13,345.20x = 128,048,292.72
  5. Step 5: Solve for x
    x = 128,048,292.72/13,345.20
  6. Step 6: Final answer
    x = 9,595.08

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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.