Home / 18,987.49-26,202.84-10,489.51

Finding the Fourth Proportional to 18,987.49, 26,202.84 and 10,489.51

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Solution

The fourth proportional to 18,987.49, 26,202.84 and 10,489.51 is: 14,475.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,987.49 : 26,202.84 = 10,489.51 : x
  2. Step 2: Convert to fraction form
    18,987.49/26,202.84 = 10,489.51/x
  3. Step 3: Cross multiply
    18,987.49x = 26,202.84 × 10,489.51
  4. Step 4: Simplify right side
    18,987.49x = 274,854,952.21
  5. Step 5: Solve for x
    x = 274,854,952.21/18,987.49
  6. Step 6: Final answer
    x = 14,475.58

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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.