Home / 28,979.48-43,412.81-21,366.89

Finding the Fourth Proportional to 28,979.48, 43,412.81 and 21,366.89

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Solution

The fourth proportional to 28,979.48, 43,412.81 and 21,366.89 is: 32,008.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,979.48 : 43,412.81 = 21,366.89 : x
  2. Step 2: Convert to fraction form
    28,979.48/43,412.81 = 21,366.89/x
  3. Step 3: Cross multiply
    28,979.48x = 43,412.81 × 21,366.89
  4. Step 4: Simplify right side
    28,979.48x = 927,596,735.86
  5. Step 5: Solve for x
    x = 927,596,735.86/28,979.48
  6. Step 6: Final answer
    x = 32,008.74

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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.