Home / 15,501.15-21,392.03-8,786.51

Finding the Fourth Proportional to 15,501.15, 21,392.03 and 8,786.51

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Solution

The fourth proportional to 15,501.15, 21,392.03 and 8,786.51 is: 12,125.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,501.15 : 21,392.03 = 8,786.51 : x
  2. Step 2: Convert to fraction form
    15,501.15/21,392.03 = 8,786.51/x
  3. Step 3: Cross multiply
    15,501.15x = 21,392.03 × 8,786.51
  4. Step 4: Simplify right side
    15,501.15x = 187,961,134.62
  5. Step 5: Solve for x
    x = 187,961,134.62/15,501.15
  6. Step 6: Final answer
    x = 12,125.63

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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.