Home / 21,723.36-32,590.80-7,874.40

Finding the Fourth Proportional to 21,723.36, 32,590.80 and 7,874.40

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Solution

The fourth proportional to 21,723.36, 32,590.80 and 7,874.40 is: 11,813.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,723.36 : 32,590.80 = 7,874.40 : x
  2. Step 2: Convert to fraction form
    21,723.36/32,590.80 = 7,874.40/x
  3. Step 3: Cross multiply
    21,723.36x = 32,590.80 × 7,874.40
  4. Step 4: Simplify right side
    21,723.36x = 256,632,995.52
  5. Step 5: Solve for x
    x = 256,632,995.52/21,723.36
  6. Step 6: Final answer
    x = 11,813.69

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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.