Home / 28,032.68-38,688.10-20,946.92

Finding the Fourth Proportional to 28,032.68, 38,688.10 and 20,946.92

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Solution

The fourth proportional to 28,032.68, 38,688.10 and 20,946.92 is: 28,908.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,032.68 : 38,688.10 = 20,946.92 : x
  2. Step 2: Convert to fraction form
    28,032.68/38,688.10 = 20,946.92/x
  3. Step 3: Cross multiply
    28,032.68x = 38,688.10 × 20,946.92
  4. Step 4: Simplify right side
    28,032.68x = 810,396,535.65
  5. Step 5: Solve for x
    x = 810,396,535.65/28,032.68
  6. Step 6: Final answer
    x = 28,908.99

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Half scale
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Double scale
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Similar ratio
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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.