Home / 28,410.42-39,206.37-15,663.81

Finding the Fourth Proportional to 28,410.42, 39,206.37 and 15,663.81

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Solution

The fourth proportional to 28,410.42, 39,206.37 and 15,663.81 is: 21,616.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,410.42 : 39,206.37 = 15,663.81 : x
  2. Step 2: Convert to fraction form
    28,410.42/39,206.37 = 15,663.81/x
  3. Step 3: Cross multiply
    28,410.42x = 39,206.37 × 15,663.81
  4. Step 4: Simplify right side
    28,410.42x = 614,121,130.47
  5. Step 5: Solve for x
    x = 614,121,130.47/28,410.42
  6. Step 6: Final answer
    x = 21,616.05

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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.