Home / 28,656.81-42,979.52-14,421.49

Finding the Fourth Proportional to 28,656.81, 42,979.52 and 14,421.49

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Solution

The fourth proportional to 28,656.81, 42,979.52 and 14,421.49 is: 21,629.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,656.81 : 42,979.52 = 14,421.49 : x
  2. Step 2: Convert to fraction form
    28,656.81/42,979.52 = 14,421.49/x
  3. Step 3: Cross multiply
    28,656.81x = 42,979.52 × 14,421.49
  4. Step 4: Simplify right side
    28,656.81x = 619,828,538.33
  5. Step 5: Solve for x
    x = 619,828,538.33/28,656.81
  6. Step 6: Final answer
    x = 21,629.36

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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.