Home / 28,740.24-39,621.96-19,663.92

Finding the Fourth Proportional to 28,740.24, 39,621.96 and 19,663.92

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Solution

The fourth proportional to 28,740.24, 39,621.96 and 19,663.92 is: 27,109.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,740.24 : 39,621.96 = 19,663.92 : x
  2. Step 2: Convert to fraction form
    28,740.24/39,621.96 = 19,663.92/x
  3. Step 3: Cross multiply
    28,740.24x = 39,621.96 × 19,663.92
  4. Step 4: Simplify right side
    28,740.24x = 779,123,051.68
  5. Step 5: Solve for x
    x = 779,123,051.68/28,740.24
  6. Step 6: Final answer
    x = 27,109.14

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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.