Home / 15,502.43-21,392.91-8,788.68

Finding the Fourth Proportional to 15,502.43, 21,392.91 and 8,788.68

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Solution

The fourth proportional to 15,502.43, 21,392.91 and 8,788.68 is: 12,128.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,502.43 : 21,392.91 = 8,788.68 : x
  2. Step 2: Convert to fraction form
    15,502.43/21,392.91 = 8,788.68/x
  3. Step 3: Cross multiply
    15,502.43x = 21,392.91 × 8,788.68
  4. Step 4: Simplify right side
    15,502.43x = 188,015,440.26
  5. Step 5: Solve for x
    x = 188,015,440.26/15,502.43
  6. Step 6: Final answer
    x = 12,128.13

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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.