Home / 15,321.85-21,141.86-8,606.19

Finding the Fourth Proportional to 15,321.85, 21,141.86 and 8,606.19

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Solution

The fourth proportional to 15,321.85, 21,141.86 and 8,606.19 is: 11,875.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,321.85 : 21,141.86 = 8,606.19 : x
  2. Step 2: Convert to fraction form
    15,321.85/21,141.86 = 8,606.19/x
  3. Step 3: Cross multiply
    15,321.85x = 21,141.86 × 8,606.19
  4. Step 4: Simplify right side
    15,321.85x = 181,950,900.36
  5. Step 5: Solve for x
    x = 181,950,900.36/15,321.85
  6. Step 6: Final answer
    x = 11,875.26

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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.