Home / 21,876.48-30,187.62-12,924.36

Finding the Fourth Proportional to 21,876.48, 30,187.62 and 12,924.36

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Solution

The fourth proportional to 21,876.48, 30,187.62 and 12,924.36 is: 17,834.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,876.48 : 30,187.62 = 12,924.36 : x
  2. Step 2: Convert to fraction form
    21,876.48/30,187.62 = 12,924.36/x
  3. Step 3: Cross multiply
    21,876.48x = 30,187.62 × 12,924.36
  4. Step 4: Simplify right side
    21,876.48x = 390,155,668.42
  5. Step 5: Solve for x
    x = 390,155,668.42/21,876.48
  6. Step 6: Final answer
    x = 17,834.48

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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.