Home / 19,139.37-28,705.29-18,189.98

Finding the Fourth Proportional to 19,139.37, 28,705.29 and 18,189.98

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Solution

The fourth proportional to 19,139.37, 28,705.29 and 18,189.98 is: 27,281.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,139.37 : 28,705.29 = 18,189.98 : x
  2. Step 2: Convert to fraction form
    19,139.37/28,705.29 = 18,189.98/x
  3. Step 3: Cross multiply
    19,139.37x = 28,705.29 × 18,189.98
  4. Step 4: Simplify right side
    19,139.37x = 522,148,507.47
  5. Step 5: Solve for x
    x = 522,148,507.47/19,139.37
  6. Step 6: Final answer
    x = 27,281.38

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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.