Home / 13,387.23-18,476.37-7,720.92

Finding the Fourth Proportional to 13,387.23, 18,476.37 and 7,720.92

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Solution

The fourth proportional to 13,387.23, 18,476.37 and 7,720.92 is: 10,656.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.23 : 18,476.37 = 7,720.92 : x
  2. Step 2: Convert to fraction form
    13,387.23/18,476.37 = 7,720.92/x
  3. Step 3: Cross multiply
    13,387.23x = 18,476.37 × 7,720.92
  4. Step 4: Simplify right side
    13,387.23x = 142,654,574.66
  5. Step 5: Solve for x
    x = 142,654,574.66/13,387.23
  6. Step 6: Final answer
    x = 10,656.02

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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.