Home / 13,665.09-20,498.75-5,345.79

Finding the Fourth Proportional to 13,665.09, 20,498.75 and 5,345.79

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Solution

The fourth proportional to 13,665.09, 20,498.75 and 5,345.79 is: 8,019.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,665.09 : 20,498.75 = 5,345.79 : x
  2. Step 2: Convert to fraction form
    13,665.09/20,498.75 = 5,345.79/x
  3. Step 3: Cross multiply
    13,665.09x = 20,498.75 × 5,345.79
  4. Step 4: Simplify right side
    13,665.09x = 109,582,012.76
  5. Step 5: Solve for x
    x = 109,582,012.76/13,665.09
  6. Step 6: Final answer
    x = 8,019.12

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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.