Home / 21,505.14-32,228.55-15,979.32

Finding the Fourth Proportional to 21,505.14, 32,228.55 and 15,979.32

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Solution

The fourth proportional to 21,505.14, 32,228.55 and 15,979.32 is: 23,947.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,505.14 : 32,228.55 = 15,979.32 : x
  2. Step 2: Convert to fraction form
    21,505.14/32,228.55 = 15,979.32/x
  3. Step 3: Cross multiply
    21,505.14x = 32,228.55 × 15,979.32
  4. Step 4: Simplify right side
    21,505.14x = 514,990,313.59
  5. Step 5: Solve for x
    x = 514,990,313.59/21,505.14
  6. Step 6: Final answer
    x = 23,947.31

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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.