Home / 13,120.93-19,659.48-9,218.35

Finding the Fourth Proportional to 13,120.93, 19,659.48 and 9,218.35

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Solution

The fourth proportional to 13,120.93, 19,659.48 and 9,218.35 is: 13,812.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120.93 : 19,659.48 = 9,218.35 : x
  2. Step 2: Convert to fraction form
    13,120.93/19,659.48 = 9,218.35/x
  3. Step 3: Cross multiply
    13,120.93x = 19,659.48 × 9,218.35
  4. Step 4: Simplify right side
    13,120.93x = 181,227,967.46
  5. Step 5: Solve for x
    x = 181,227,967.46/13,120.93
  6. Step 6: Final answer
    x = 13,812.13

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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.